thanks in advance to anyone who has solved this problem.
Best answer by RetiredTripleHelix
You need to reset your home page and or startup page within Chrome see here: https://support.google.com/chrome/answer/95314
Everytime I open Thunderbird I get this opening up in Chrome https://platform.twitter.com/jot.html and I have Breitbart.com as the home page. I have tried everything and it still opens the page.
Do you have a good Ad Blocker installed? I personally use uBlock Origin
Also add a good free Ad Blocker like the ones suggested below:
For Internet Explorer Ad Block Plus: https://adblockplus.org/
For Firefox uBlock Origin: https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/?src=ss or Privacy Badger: https://addons.mozilla.org/en-us/firefox/addon/privacy-badger-firefox/
Google Chrome uBlock Origin: https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm?hl=en or Privacy Badger: https://chrome.google.com/webstore/detail/privacy-badger/pkehgijcmpdhfbdbbnkijodmdjhbjlgp
uBlock Origin For Microsoft Edge Browser on Windows 10: https://www.microsoft.com/en-us/store/p/app/9nblggh444l4