Emails stopped sending-receiving (Oct 2016)

I have accounts with hotmail.co.uk, yahoo.com, orange.fr, outlook.com all of which were set-up and working on Thunderbird. I had a problem and deleted one of the accounts, and later added it again. I noticed that none of my accounts were subsequently receiving mail. Since then, I have uninstalled Thunderbird, deleted my profiles, renamed the \AppData\Roaming\Thunderbird directory to lose and residual set-up. On reinstalling Thunderbird, I can't get any of my email accounts to work (all addresses, passwords have been verified and tested on line since - all good). Is there something that is not removed on uninstall, and effective deletion of \AppData\Roaming\Thunderbird directory that could affect this Thanks