Can't Access Firebox from both Web UI or WSM
First time posting here so my apologies up front for any breaches of etiquite.
My (very small) company currently runs a Firebox XTM 525. I know that the device reached EOL on Dec 31, 2020, which is why I'm here on the community site and not reaching out to Watchguard directly. My issue is that I can no longer log into the device with any method that I'm aware of. Both the Web UI and WSM give me an "invalid credentials" error, even though I know they weren't changed because I'm the only one that ever accesses the device. I've tried both admin and status users using both of the access methods listed.
I tried rebooting the device this morning with no luck. I'm really just wondering if there is a method to access the device that I'm not aware of, or a method to resetting any of the passwords.
Thanks in advance.