I encourage you to let Thunderbird do this; editing the profiles.ini file can be flaky, as you discovered. Instead click help>troubleshootinginformation, scroll down to 'profile' and click 'about:profiles' and select the desired profile.

I decided to just copy all my files to the new profile folder and it worked. I only lost about 20 days of email due to the computer crash. Thanks for your help.

Thunderbird isn't the issue. The big problem people are being faced with is that their email providers have instituted a variety of ways to ensure only authorized customers can access their servers. So, the password a person uses on web access is often not the same one that is required when using an email client. I see posts every day from people, swearing their password is correct and that something is wrong with Thunerbird, only to learn that their password isn't authorized for an email client. I see regular posts about comcast, and this thread may be useful: https://support.mozilla.org/en-US/questions/1413403

The provider and password had nothing to do with this issue. The issue was that I could not get Thunderbird to point to my old profile folder. Resolved now.