Instagram API error

Hello everyone,

I′m having trouble to connect my Instagram account to the plugin in the beckend.
I have to unlink the account after a few week because the feed is not showing older and even deleted posts. So I tried to reconnect the account with the plugin, but after I accepted all the checks on Instagram my wordpress refreshes with a blank site with a text saying “Instagram API error”.
Because the plugin worked before I know that the account has an API connected with the site, but now that I want to reconnect the account I get this error code with no account linked to the backend.
Appreciate every help I can get.

Kind reguards.