Basically what it says. I can connect to it if i unhide it. If I hide it, it immediately disconnects me. I do check the "Hidden Network" checkbox when trying to make it a hidden network. I've even set the BSSID to the Router's MAC Address to test that out, too. But, to no avail. I only unhid it to test if I had the information correct, thinking it was wrong.
For reference, I am using a modified AsRock B650i Lightning Wifi motherboard, by removing the MediaTek chip and replacing it with an Intel AX210 for better connectivity (The Mediatek card was so bad.).