Alright guys and girls I think I got this one figured out. I searched through the forums after having a hell of a time changing my avatar picture and saw that a lot of people had the same problem. I tried the ways others suggested and it just never worked. Until today!

1. Sign out of eroids on all devices

2. Clear your cache, history, cookies, everything. If you can clear it, clear it.

3. Now pick only one device to log into eroids with and log in.

4. Go to edit account and select delete picture and hit save changes.

5. Now sign out again, clear everything again, and restart your browser.

6. Have the picture you want to use already resized to 150 x 150 pixels.

7. Log into eroids and go back to edit account.

8. Choose the resized file you want to use and upload it. It wont show the picture when you choose it, just the filename.

9. Hit save changes.

BOOM. Now I can't guarantee that this will work for you but it worked instantly for me. No waiting a few days. No thumbnail different than the profile avatar. It worked perfectly for me. Give it a shot! I hope this helps!