if no one's mentioned it, Check the common issues Pinned thread, I believe Lowlevelfatalerror is listed there, good chance you'll get a solution from that. Sorry about the delay, Normally someone would've pointed that out and I (a random user) haven't been nearly as active checking here since I've been sitting on their discord
There may also be some kinda issue with Adminstrative permisions, Firewalls, and etc..