All plugins are updated and installed and activated and whenever I try to import any of the demos it gives me: Error: Internal Server Error (500)
I have verified that I have PHP version 7.0 and 128M memory.
Do you know what can be the issue?
Ok, so it shows 500, but it seems to be imported ok. I was a bit fast there. :-)
Not exactly sure what you mean by imported ok but if there is a 500 internal error it should be logged under you error log file and you can see what the exact cause is.
If you cannot find the error log have you hosting provider take a look at this and see what the cause is.Cheers.