system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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configuration changes; importing or exporting of database records; and consultation on site operation and administration. Additional Web site administration services will be billed at $200 per hour. 14. a monthly report of user activity on the Hosted Site. RESPONSIBILITIES OF THE CUSTOMER The Customer is responsible for paying i-on the recurring monthly fee in the amount of $450. The Customer is responsible for paying the recurring monthly fees by the 5th day of each month beginning in April 1, 1999. The Customer acknowledges that failure to pay such fees in a timely manner will result in the interruption or discontinuation of services for the Hosted Site. The Customer is solely responsible for all content on the Hosted Site, including but not limited to, HTML pages, graphics, sounds, animations, video clips, Java applets, client-site scripts such as JavaScript and VBScript features, ActiveX controls, and other files and/or executable components for use or download by the users of the Hosted Site, as well as the accuracy and validity of any information or data contained within, as well as the overall look-and-feel of the Hosted Site from a user's perspective. The Customer is solely responsible for the ongoing maintenance of such content. The Customer acknowledges that this Agreement is explicitly not an agreement for i-on to provide content creation or maintenance services for the Hosted Site. The Customer is solely responsible for all customer support required by users of Hosted Site. In the case of a problem with the Hosted Site that is the responsibility of i-on according to this Agreement, the Customer shall directly notify i-on, which shall report the resolution of such problem directly to the Customer. If the problem of which i-on is notified is not a problem that is the responsibility of i-on according to this Agreement, the time spent by i-on relating to the incident will count towards the Customer's monthly allocation of Web administration services, and any additional time 3 exceeding such allocation will be billed to the Customer at the rate set forth for such services. At no time will i-on take responsibility for directly interacting with the Customer's users. The Customer acknowledges that this Agreement is explicitly not an agreement for i-on to provide "help desk" services to the users of the Hosted Site. The Customer is solely responsible for all marketing and promotion of the Hosted Site and is solely responsible for generating traffic to the Hosted Site. The Customer is solely responsible for the security of its administrator account(s) and respective password(s) for the Hosted Site, and is solely responsible for any loss of data or damage to the Hosted Site that arises out of any breach of such security. The Customer is solely responsible for any and all advertising on the Hosted Site. The Customer is responsible for any and all software programs, server-side scripts, and/or executable components that are installed on the Hosting Computer for the purpose of providing interactive applications or dynamic content on the Hosted Site. Any such programs, scripts, or components that might affect the stability of the Hosting Computer or interfere with other Web sites on the Hosting Computer must be approved by i-on before being installed on the Hosted Site, i-on reserves the right to deny the Customer permission to install any such programs, scripts, or components, to require additional fees for the installation and/or ongoing operation of any such programs, scripts, or components, or to remove any such programs, scripts, or components, if in i-on's sole discretion they will interfere with the operation of the Hosting Computer or exceed the Customer's monthly allocation of Web administration services. CONDITIONS OF SERVICE The Customer acknowledges that the Internet is an unreliable, unsecured, and error-prone network and agrees to hold i-on harmless for any interruptions in service to the Hosted Site or inability for users to reach or effectively use the Hosted Site that arises outside the scope of i-on's responsibilities as explicitly described in this Agreement. The Customer acknowledges that data loss is a possibility, even with mirrored computer storage and archival backup of such storage as provided by i-on per this Agreement, and agrees to hold i-on harmless for any such data loss for the Hosted Site, provided that i-on maintains reasonable steps as described in this Agreement to protect against such data loss. The Customer shall use i-on's resources in a manner that is clearly consistent with the purposes of the products and services offered. The Customer shall comply with applicable laws, standards, policies, and
"""

Extract the exact clause related to "Effective Date" from the excerpt above.