Unable to Log into Line via Facebook, Now Requires Phone or Gmail Access

I used to log into my Line account through Facebook, but now I can’t access it anymore. The app is suddenly asking for a phone number or Gmail address, and I can’t use my account at all. I’ve already contacted Line’s official support, but I haven’t received any response. I’ve tried every possible solution, but nothing works. It’s incredibly frustrating that I can’t access my account, and the lack of support makes it even worse. Line, please address this issue immediately and help me regain access to my account. I need a solution as soon as possible!