Telus email accounts not working on new MacBook Air

[wireless]

Hi;
I have a new MacBook Air [Sonoma 14.2.1] on which I am not having much luck accessing emails using Mac Mail. I also have a desktop iMac on which I am accessing my Telus accounts just fine. I have two Telus accounts.
After signing up the new internet accounts on the MBA [with the GMail IMAP and STMP settings] the accounts show up in the Mail app but with a triangle ! icon. The mailboxes are empty.
The accounts on my iMac Mac Mail are working fine.
I have tried multiple times [adding and deleting the accounts] to no avail.
Any insights would be much appreciated.



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