I had a similar problem as you. I was using Comcast HD service for years and it worked fine. My condo association upgraded the bulk contract to X1 DVR service in 1/2020 so, since I was paying for the service through my condo fees, I swapped out all of my old Comcast boxes for the X1 DVR boxes in mid 2/2020 and now have two Pace PX022ANC boxes. I did a self install and had almost daily periodic problems with the X1 DVR service with channels freezing, unable to switch to another channel without getting the RDK-03033 "...trouble connecting to the internet" message, etc. The Comcast Labs X1 menu item showed that the cable TV signal was "Good" and the diagnostics on the cable modem showed excellent signal (excelent dBmv and SNR) and almost no errors.
On the end of the building is the Comcast connection panel where the coax lines from all of the condo units connect to a Comcast distribution panel. My connection was the only one that had an Arcom (FHP-34.75) filter attached (pic below) although there was another lying on the ground by the panel. I have no idea how long the filter had been on my line or when it had been attached. I removed the filter and added a POE moca filter and my service has been rock solid since then which was about 1 week ago. Since only 2 of the other 8 units had a POE moca filter attached I'm assuming that removing the old filter rather than adding the moca is what fixed my problem.
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I have all of my credit cards and bank accounts setup to send message alerts to my phone whenever there are any charges to any of my accounts and the alerts from multiple banks and credit cards have always worked as expected. I ported my cell # to Xfinity Mobile from T-Mobile in 2/2020 and was a bit surprised that the banks knew that I had changed cell service providers and required that I re-validate my phone which I did and the alerts from all of the banks and credit cards started working again after I revalidated except from Ally Bank. To reiterate, my phone number did not change after I moved to Xfinity mobile.
I called Ally Bank. Ally said that Xfinity mobile isn't a supported cell service provider even though Verizon is supported by Ally and Xfinity Mobile uses the Verizon network. Ally said that it isn't the network that is a problem but the cellular service provider (in this case Xfinity) that is blocking the messages. Ally said that Xfinity would need to do something (not sure what) to enable the alert messages to pass.
In summary, I am asking Xfinity Mobile to investigate and made required changes to enable text alert messages from Ally Bank to be delivered to my phone.
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