Tried multiple from free sources (proxyscrape.com) to proxymesh so far.
I tried with my web-based config and I have not banned any account. That's why I say, it's the config.
I had to migrate it from BB and adapt the changes that I had already made.
I think the issue is not in the config but OB, it's a bug which causes OB to stop using the proxies after all proxies are banned and uses your ip ( or some other shit) which caused the accounts to be locked. I've tried to run the config with BB 2.5.2 and all accounts are still valid after days. Anyways thanks for notifying me
Edit: yea i've tested other OB configs for other sites and its causing accounts to be locked compared to BB