[TECHNICAL-SUPPORT] SOS-2042 Invite Members by email fails on account creation with active User workflow

Hi Jonathan,

this pr contains 3 SOS tickets:

To reproduce SOS-2042 on master SOS-2056 is necessary. 
SOS-2043 is tightly related.

Please note, that SOS-2059 is related as well, although we think that SOS-2059 should be handled separately.

If you have any concern, please contact to József or to me.

Thanks,
Tamás