As stated above, the main page of my website (http://pogotowiekomputerowegorzow.pl/) takes a very long time to load (~10-15s). Do you have any ideay what might have caused this?
Here is what I noticed:
Your server is responding slowly, please check this GTmetrix report (Waterfall tab, 1st item). It is most likely hosting issue (but you might also want to try to deactivate all your plugins except recommended and see if it helps).
Home page size is large, 10MB (average is 1.74MB).
Please feel free to ask any other questions that you might have.
Kind Regards, Roman.