Kyocera DuraXV Extreme / Extreme+

I got this phone about three weeks ago and I cannot establish connections to any of my three email accounts: yahoo, gmail, comcast. I go through the procedure and get the response that the name or password is wrong. I am using these accounts on three computers via direct internet or Windows 10/11 mail client. No problems. All accounts are one level security, a simple password. I cannot access the accounts using the browser in the Kyocera either.

Is there some security setting in the phone that could be causing the problem? Any help would be appreciated.