Exhibit 4.39



LETTER AGREEMENT



This LETTER AGREEMENT
(this “Agreement”), dated as of September 24, 2018, is entered into by and among EHAVE, INC., an Ontario
corporation (the “Company”), and •(the “Lender”).



WHEREAS, the
Company and the Lender have previously entered into that certain Subscription Agreement (the “Subscription Agreement”),
pursuant to which the Company issued to the Lender 50 unsecured Convertible Debentures and 50 Warrants exercisable to acquire that
number of Common Shares as equal to the quotient of CDN$1,000 divided by the Conversion Price, at the closing held on January 31,
2018;



WHEREAS, the
Company has informed the Lender that the Company intends to obtain a bridge financing pursuant to which the Company will borrow
up to $500,000 in exchange for issuance of promissory notes, warrants and common shares (the “Bridge Financing”);



WHEREAS, in connection
with the Bridge Financing, the Company and the Lender agreed to convert the outstanding Convertible Debentures and cancel the Warrants;



WHEREAS, capitalized
terms used herein but not otherwise defined shall have the meanings ascribed to them in the Subscription Agreement.



NOW THEREFORE,
for good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties agree as follows:



1.       Conversion
of Convertible Debentures. Upon any closing of the Bridge Financing, all principal and accrued and unpaid interest then outstanding
under the Lender’s Convertible Debentures shall convert into the number of common shares of the Company that equals to (i)
the aggregate amount of the Principal then outstanding under such Convertible Debentures (for the avoidance of doubt, not including
any Added Principal) divided by (ii) $0.00088110. The Lender shall surrender its Convertible Debenture Certificate, duly endorsed
(or a notice to the effect that the original Convertible Debenture Certificate has been lost, stolen or destroyed and an agreement
acceptable to the Company whereby the holder agrees to indemnify the Company from any loss incurred by it in connection with the
Convertible Debenture Certificate), at the office of the Company. The Company shall, as soon as practicable thereafter, issue and
deliver to the Lender a certificate or agreement representing the number of common shares issuable upon conversion of the Lender’s
Convertible Debentures to which the Lender shall be entitled upon such conversion (bearing such legends as are required by applicable
state and federal securities laws in the opinion of counsel to the Company). The conversion of the Lender’s Convertible Debentures
pursuant to this Agreement shall be deemed to have been made at the closing of the Bridge Financing, and on and after such date,
the Lender entitled to receive the securities issuable upon such conversion shall be treated for all purposes as the record holder
of such securities and the Convertible Debentures, and all obligations of the Company thereunder, shall be deemed to have been
indefeasibly satisfied in full. Only whole Common Shares shall be issued upon conversion of the Convertible Debentures pursuant
to this Agreement. Any remainder due hereunder which is insufficient to purchase a whole Common Share upon conversion of the Convertible
Debentures shall be rounded up to the next whole Common Share.



1







2.       Representations
and Warranties. The Lender hereby represents and warrants to the Company, and the Company hereby represents and warrants to
the Lender, that (i) it has the full right, power and authority to enter into this Agreement and to perform its obligations hereunder
and under the Subscription Agreement, the Convertible Debentures and the Warrants as amended by this Agreement, and (ii) the execution
of this Agreement by the individual whose signature is set forth at the end of this Agreement on behalf of such party, and the
delivery of this Agreement by such party, have been duly authorized by all necessary action on the part of such party; and (iii)
this Agreement has been executed and delivered by such party and constitutes the legal, valid and binding obligation of such party,
enforceable against such party in accordance with its terms, except as may be limited by any applicable bankruptcy, insolvency,
reorganization, moratorium, or similar laws and equitable principles related to or affecting creditors' rights generally or the
effect of general principles of equity. In addition, the Lender further represents and warrants that it is the sole record and
beneficial owner of the Convertible Debentures and the Warrants and that it has not transferred or assigned any of the Convertible
Debentures and Warrants, or any interest therein, to any other person prior to the date hereof.



3.       Release.
By execution of this Agreement, Lender hereby acknowledges and agrees that it all Events of Default that have occurred and were
continuing prior to the date of this Letter Agreement are hereby waived by Lender, and Lender forever releases and discharges the
Company from any and all liability arising as a result of any such Events of Defaults.



4.       Counterparts;
Choice of Law. This Agreement may be executed in several identical counterparts all of which shall constitute one and the same
instrument. This Agreement shall be construed and enforced in accordance with the laws of the State of New York, without regard
to the principles of conflicts of law thereof.



5.       Further
Assurances. Each of the parties hereto shall execute and deliver, at the reasonable request of the other party hereto, such
additional documents, instruments, conveyances and assurances and take such further actions as such other party may reasonably
request to carry out the provisions hereof and give effect to the transactions contemplated by this Agreement.



[signature page follows]















IN WITNESS WHEREOF,
the parties hereto have caused this Agreement to be duly executed as of the day and year written above.



|THE COMPANY: |                                | LENDER:
|------------ | ------------------------------ | -------
|             |                                |        
|EHAVE, INC.  |                                | •      
|             |                                |        
|By:          |                                |        
|             | Name: Prateek Dwivedi          |        
|             | Title: Chief Executive Officer |