Open Source Document Management System | OpenKM

Hello there.
Few days ago I installed latest version of openKM (docker image) from website.
Then I uploaded some PDF and DOC files with some names like "RouterName instruction.doc", "GPS tracker description.pdf" and something like "Testfile.odt" with text inside. But after that I can't find anything when I type this filenames in Search.
The program can't find anything uf I type any existing filename in search, any part of this name, any word that exists in content of the file. So the search shows nothing any time.

It is clear installation, so I am little confused why it is happening.
I also find "Re-index" in admin settings, I completed 3 of 3 reindexing, but documents are still not showing in search results.
Please help me to fix it.

Hello. Are there any recommendations?

Share screenshots where name of the documents be visible and screenshots for better understanding how are doing the query

Here is the sample of file that I can't find.
Also I tried to find other parts of name, like "1520", "Robustel" etc.
But OpenKM can't find any part of any files that were uploaded

I can not read anything in these screenshots, please try to share with bigger resolution.