SOOO Incredibly frustrated/disappointed right now but don't know what to do

I've been a Cox customer for over 30 years now, and I've never had any problems with my cable or internet services. I also always try to keep an open mind when services change or companies have mergers/buyouts. Therefore, when I saw all of the recent Cox/Spectrum notifications, I tried to do the same, and I was actually even initially hopeful that their "free included premium channel apps" might reduce my monthly bills for things that I already had included in my Cox TV package. However, my recent experience with that has been SOOO unbelievably abysmal that I'm honestly to the point that I'm genuinely considering cancelling all of my services and looking for other providers. For context, my former TV package already included HBO and Paramount+, and I never had a single issue accessing either site. However, since the change to Spectrum, every time I try to access either one of those, I get a "get started" prompt rather than being able to just open them. I've already done the full "set-up" to re-enter codes to link my cable provider, updated my former Cox user ID to a new Spectrum user ID, reset my existing passwords, etc, and every time I've done all of that, each if those sites has let me in and given me a false hope that I've successfully transitioned to the new platform. However, the next time that I try to open either app, I'm once again returned to pages that ask me to repeat those same set-up processes. I've already spent an excessive amount of time trying to reset those things (at least 10 hours and likely more), so I'm literally at my wits' end now and also becoming extremely skeptical about whether it's worth wasting my time on any further attempts that will likely only end in the same place. Therefore, as a "last ditch" effort, I wanted to see if anyone else has any suggestions to resolve this before I just give up, throw in the towel, cancel all of my current services, and search for a different TV/internet provider.