QTranslate with links: home logo, and submit button on leavea reply, etc.

I got some more information:

I installed qTranslate slug and it should fix the problem but this happens:
https://mywebpageurl.eu/?lang=hu/ — not works, sets deafult language
https://mywebpageurl.eu/?lang=hu — if i delete “/” it works, so why / added to the end of the url? any advice to fix it?

After i log out from account:
https://mywebpageurl.eu/?p=1&lang=hu — the problem is the : instead of the &

And finally what i noticed is when clicking on a date:
https://mywebpageurl.eu/?p=1&lang=hu#comment-7 — the same problem

Thank you!