about search result. key word search not found , by list all documents

Did you instal the WPSOLR 5.xx Solr files ?

Can you ping Solr from WPSOLR (green check on saving index setup in tab 1.)

If I search keyword and found documents, it is OK.
But If search keyword not found document, it list all documents.

Can you share your website link here ?

May I email to you?

Use https://wpsolr.com chat box.

This problem is customer search from. Fixed.

Good.