Anki doesn't open my 1st profile

I had the latest version of Anki 2.1.26, but then I found convenient editing add-on
they said:
Supported Anki versions:

  • 2.1.22-2.1.23 (updated 2020-06-17)
    so I downloaded it.
    My current version is 2.1.22
    but then I couldn’t open my first profile, although I had backup, but after two restarting my computer the problem is still there. I had some decks which I didn’t export on 1st profile.

Could you help me please?

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