user change log

My site is decades old. Members have opted into my newsletter before there was ever an audit trail. Now with the GDPR I am supposed to be able to prove that my members opted in or face potentially millions in fines. But there is no functionality to prove legacy members have ever given consent...

hey, i was wondering if someone could answer this question for me. i've noticed that in the 'user change log' of xf that almost all users are changing user groups fairly constantly. here's an example: not all, but a lot of the changes are occurring at twenty minutes after the hour, which...