The fact you’re not able to log into your router is the first problem you need to solve here. If you’re having network issues, the router is always the first thing that needs to be working perfectly. Otherwise whatever else is going on is probably being affected by the router in some way.

What you’re doing right now is sort of like saying “Hey, does anyone know how to get this bad smell out of my car? Nothing I do seems to work. Oh, BTW, the engine is on fire, it’s been like that for a while, I don’t know how to put it out. Anyway, so the thing with this smell is…”