I continue to have this problem with some users between vbulletin and amember. I have done the following: 1. create product in amember (no charge item since these people already paid for a membership in vbulletin) 2. intergrate product to vbulletin usergroups on intergration page 3. turned on silent add members 4. linked all vbulletin usergroups to products on vbulletin plugin page When a vbulletin member signs in - it says they don't exist If I try to add them manually IN AMEMBER - I get a message on the admin dashboard that this user name is already taken. If I look up that member - they don't show up anywhere. I have more than 2000 members still on vbulletin and 400 who have successfully linked. Some link, some don't. What is the problem?? UGH!!! this is so frustrating.