Hello @baxter89,
Thank you for reporting issue.
We are testing our plugin with WP 6.1.1 and will update the plugin soon.
You can use our plugin with WP 6.1.1 and ignore the warning.
Regarding blocks in backend you can click “Attempt recovery” button it will fix all issues on blocks.
If you have further issues, you can report us any time from https://gutenify.com/product-support/.
Thank you!