I also have this issue. This is like the Y2K bug that finally materialized in 2021. I have called customer service two times. Four techs have witnessed the error message and they told me "its your internet connection". I tried four different internet connections in two states (SC and NY), my ATT mobile hotspot, company internet, and home internet on three different devices and four browsers. This is surely not a problem with my internet connection. Cookies cleared, devices restarted, updated. I can log in and even download previous years of info, but when I try to edit by clicking on the center buttons the same message pops up.
I'm not sure if everyone with this issue has a common track or, but the one strange thing I did this year is saving most of my work on TurboTax in December 2020 (when I had no trouble logging in). I wonder if some changes in the system related to updated tax laws or something cause a glitch when they updated the website?
I assume that many more people have this issue but did not take the time to post yet. I have also looked at the Developer Tools in a few browsers and there are several error message there. I'm not a programmer but this seems like something pretty simple for the developers to look at and troubleshoot very quickly.
Please help, and escalate this to the best in your business.
