I think I got banned because I found out that my sister was also using her account on the same network, and it looks like I got banned for having multiple accounts. She also can’t log into her account.
I have been asking this question for a long time: that I have a sister, I sent them photos of computers and selfies with a passport, because they did not believe me at first and called my sister a fiction, then the answer came that due to frequent fraud they do not allow 2 users to collect from one subnet, although you have different devices, but at that time there was an IP address error, the error sounded like this "collection has already been made from this IP address", and there was no ban for this. But apparently times are changing for the worse. Although in your post you did not explain whether your devices are the same or not, and what IP address does your provider generate, dynamic or static?