License key invalid??!!

I run a multisite. After installing WP easy updates I had to add license keys on the plugin page. I had no problems doing so on the main site, but on the other sites of the multisite it just came up “The license key is invalid”.

Plugins affected that don’t accept the license key from my account area:
Location Manager
Re-Captcha
Review Rating Manager

Or maybe it’s not needed? Does the plugin get updated just by having it done from the main site and the license key entered there?

Thanks