I am not sure what author and publisher data your 3rd party SEO tool referring to but when I put one of your site blog post https://biblsoft.ru/wiki/ustanovka-apk-fajlov-instrukcija to the Google rich result test tool, it doesn't have this issue.

You can review this result from the Google rich result test tool.

https://search.google.com/test/rich-results/result/r%2Farticles?id=2tWMj-4-2Bz5xVfoycpLvg

Yes, I see about Google rich result test tool.
And it has no URL to the author page

https://directory.audio/images/monopics/2022-02-11_08-12-19.jpg

I've applied some fixes into this file JoomlaFolder/components/com_easyblog/themes/wireframe/helpers/post/entry/schema.php, you should work fine now.

https://search.google.com/test/rich-results/result?id=YTbr4C7oKV2E2LICP-DuGg

Thanks!
Can you add this fix to the next update?
Don't want to lose these changes after the next update.

Yes, we will include the fix into the next release version.