Sorry to hear about your health & family issues 🙁
You are fairly far behind on updates, this might not be as simple as clicking the "update app" button..
The "update app" button pulls the latest files from Git. This includes some database updates as well in database_updates.php, but the idea is that they're applied incrementally when logged in by clicking the "update database" button.
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Firstly, what does your local file named database_version.php have?
If it's anything other than 0.7.7, then git isn't updating files properly (via the app update button). You'd wanna do a git pull to update this, but it's best to be logged in to ITFlow when you do if you want to be able to try the database update button.
You can also try doing this on a branch (git checkout -b troubleshoot-updates && git pull upstream troubleshoot-updates) so that you can always switch back to your old version working version to try and login again. You will almost certainly have to run some updates manually using workbench.