No apps

it runs well but i cant download any apps

This is so vague that we really don’t understand what apps you are referring to.

i go to videos>add-ons>get more>install from repository>kodi add-on repository. and then it says: could not connect to repository.

Maybe a silly question… but is it connected to the internet?

yes its connected

Wireless, or with a cable?
I know with the wireless, it could connect to a fon like service, wich require you to login in a web browser… That maybe could cause some problems?

Otherwise I have no idea… sorry.

whit a cable

Did you force a scan of the repo by using the check for updates function?

i got a osmc update error
error installing: please report this on the osmc forum.

Then we need logs.

To get a better understanding of the problem you are experiencing we need more information from you. The best way to get this information is for you to upload some logs. You can learn more about how to submit a useful support request here.

Thanks for your understanding. We hope that we can help you get up and running again shortly.