Fidium has not been able to resolve my Apple device internet issues since moving to Roseville--can Xfinity resolve them---

Hello Everyone, I was an xfinity customer for many years in the Bay Area prior to moving to Roseville on 8/10.  I dropped my Xfinity because people told me fiber was the way to go so I signed up with Fidium but have not been able to back up my iPad, access my Apple News Account and other issues.  I opened a ticket with them they determined I needed help from the Advanced Tech Team but was told that this is an area wide problem and Fidium has been working to resolve it--in other words, not just me.  It has been incredibly frustrating trying to actually connect with a tech and today I received a message asking if everything was resolved and found out they had closed out my ticket and I had to insist on starting a new one.  I find it alarming to say the least that it is taking days to address this "area-wide" issue and have decided that maybe it makes sense to return to Xfinity.  I am a college professor and need great service.  Apple has been incredibly helpful but we both agreed this is really a connectivity issue.  I would appreciate technical people connecting for advice on this.  Thank you.