restored WP does not work

Hello everybody,

had a WP-Blog for 15 years, hosted at Strato in Germany.

After I have been in hospital in coma several months, Strato was deleting my blog. They say it can not be restored.

But I had a backup of both the server files and the database.

Now trying to restore the blog. Trying to save the backuped files onto the serer did not work.

So I installed a new WP installation.

Before I was replacing the wp-includes folder, WP started but I could only see the first site. The links to the other sites did not work (was saying that it could not find the link).

But, after replacing the wp-include folder with the backuped one, nothing works anymore.

I know that in wp-includes there are some heavy core stuff.

Does anybody know which files of wp-includes I can replace with the backuped ones without harming the core which already works with the new installation?

I asked at Strato, but they are telling me they are not WP professionals and this is a fault of WordPress …

First I tried to restore the files onto the server and the database files into the database. Changed all the paths in the database files. Didn’t work.

Then I installed WP new. Of course it worked.

Then I replaced the files of the database of the new WP installation with my backed up database files. And replaced the server files of the new WP installation with the backed up server files.

My old WP blog worked as a Website. So I had a lot of different pages on this blog (created at the WP dashboard using “New page”).

Adter replacing the wp-content files of the new installed WP blog with that ones of my backup, I was able to see my old WP blog (as a Website) the first page.

On this page I have seen the links to all the other pages on this my old WP blog (Website). But this links didn’t work. (Maybe it helps you better to understand if you take a look on one of my other WP blog-website at this internet adress: wasserspiele.emotion-experts.com or at https://www.the-emotion-experts.com/Wasserspiele-Blog/ ).

And after I restored my backuped files from the wp-includes folder with that ones of the new installed WP blog, the blog didn’t start anymore …

Can anybody help???

Thank you in advance.

Very truly yours,

Thomas Libermann