Just found this in my log:
Database error in vBulletin 4.2.5 Beta 1:
Invalid SQL:
INSERT INTO oasl_session SET userid='85961', session_token='JEOGPb3rGt1nfI7PfB2LXGTq8B6xJazzQGD v', date_created='1488993068';
MySQL Error : Duplicate entry '85961' for key 'userid'
Error Number : 1062
Request Date : Wednesday, March 8th 2017 @ 12:11:07 PM
Error Date : Wednesday, March 8th 2017 @ 12:11:08 PM
Script :
http://##############
Referrer :
http://#######
IP Address : 173.245.50.139
Username : #######
Classname : vB_Database_MySQLi
MySQL Version :
Server : ########
It is supposed to be
https://// also not sure about the duplicate session..