The link on the e-mail I received is [
www.qaci.net]
It would not work on older versions of Firefox or Chrome. I had to use a Windows 10 computer with the current version of Chrome. I was able to sign in with the user name and password I had set up my account a while ago.
Here is the content of the e-mail I received.
"Hi to all these restaurant mystery shoppers on the BCC list who have applied to QACi in the past.
After a long time off due to Covid, I will have restaurant mystery shops in your area early in 2022. If you are still doing mystery shopping and are interested in doing restaurant shops, please reply back and I will activate your account to enter our website and likely have to remind you of the username and password you used when you applied. "