I have Upgrade DataEase form vers 8.1 to 8,2. Now I can’t use the <F2> for saving and alt <F5> for searching. So I have to reinstall the old version or..

Dear Finn. Edvin.

That has not changed from 8.1 to 8.2 nor from any earlier version of DataEase for WIndows. It must be something wrong with your installation. Try to first restart your computer if that doesn't help, De-install DE8 fully and re-install it from scratch.