
Hi! I'm Richard, an Independent Advisor. I'm here and ready to help you today!
It sounds like the changes made to your email accounts have impacted your Yahoo.co.uk mail setup, especially with server settings. Here's a step-by-step approach to troubleshoot and resolve the issue.
Use correct Yahoo server info.
Incoming: imap.mail.yahoo.com, port 993, SSL on
Outgoing: smtp.mail.yahoo.com, port 587 or 465, SSL on, use your password
Remove and re-add your Yahoo account.
Delete the Yahoo account from your iPad and Mac.
Add it again using the correct server details above.
Use an app password if needed.
If you have two-step verification on Yahoo, you need to generate an app password.
Log in to Yahoo online, go to Account Security, and make a new app password.
Use that password when setting up the account.
Kindest Regards,
Richard R.