Maison

They couldn’t help. What′s my next step??

Thank you! I′ll try.

Thanks Kharis!
Yes, plugins were activated and updated.
However, it appeared that block came from those plugins:
resmusit, WordFence, Sucuri, Astra Starter Templates and some others that have been installed by the server.
It is dowloadable now but looks different:
see https://www.nkt.ee

All the best,
Tuuli

https://nkt.ee/wp-admin/themes.php?page=starter-sites

hello,
free starter Plumber does not download. It goes to 43% and then stops.