Constant firewalll error messages - FW.IPv6 INPUT/FORWARD drop and WANATTACK.

So, I've had these error messages popping up on my modem firewall since 12/24/22. We switched modems, we went through multiple agents, we got a technician to visit. The technician did everything they could, but they're not equipped to handle the issue I was presenting, they changed my splitters and filters and stuff.

The error still appears in my firewall, and despite researching every day for a month, no solution anyone offered worked for me.

The error began out of nowhere, for no reason, and with no change to the modem itself.

I really need help, because the ping spikes have made doing anything live pretty awful, like watching streams, or playing online games.

They appear every day, every hour, with no end. It's always at least one, happening every 3 minutes or so. Help!