No longer recieving Email

Since 5-31 I no longer have been able to recieve emails from any of my comcast email accounts to my PC or Apple ipad when connected to the internet via wifi. I did not change anything to make this happen. I have talked to several comcast support people without any resolution. I can however send emails from my PC or ipad. Here is what is happening:

• I use outlook on my pc and apple mail on my ipad
• I cannot recieve email to Outlook or Apple mail when connected to the internet via Fidium wifi
• I can log into my account from a browser and see all my email that way
• I also can recieve my email to Outlook or Apple mail if I connect to the internet via a cell connection bypassing wifi
• I am using Fidium as my ISP since last June of 2023
• All email has been working fine up until 5-31-24
• There is obviously something going on between Comcast and Fidium as it relates to the incoming mail server
• I use IMAP.comcast.net as my incoming mail server(also tried mail.comcast.net with same results)
• I have rebooted everthing multiple times (PC, IPAD, Router) with no change
• I have deleted mail accounts and readded. Only way the readd would work was if I shut off wifi, connecgted via a cell connection using the hotspot on my ipad
• When I am connected via wifi this is the error I get:

[Edited: "Personal Information"]

• I can reenter my password, but this box just keeps popping up

This is pretty much everything. There is a block going on when trying to go through Fidium to connect to the comcast incoming mail server and it needs to be fixed. Can you help!