Issues since fibre connected

Well here we are almost 2 months since fibre was installed and we are wishing we never had it done. The main PVR has no issue watching live tv, recordings, etc but all of our WLS boxes are now so frustrating to watch. We have had two installers out, and many phone calls to support with them trying to “fix things remotely that the installers can’t do”…..we still get “press ok on your remote to browse recordings” showing up on shows about every 30 seconds, we cannot pause live tv, we lose total signal to the box on numerous occasions and we get messages saying we can’t watch tv because too many TV’s are watching/recording (where there is only ONE tv being watched!). Nobody can tell us what is going on, i keep filling out surveys via text when they want to know how things went and nothing! So ready to cancel……