If you go through your account and there is a triangle with the warning near your Social media channel then you have to re-sync your account.
This could happen because of different reasons - you have changed the password, name of your profile etc.
Scroll down to the exact channel and press Sync (the orange button under the photo of your account).
You may face issues with Instagram connection. There are several variants why this could happen:
- your browser is blocking pop up windows - please go to browser Settings and turn this functionality on;
- your browser language is not English - since the 29th of March Instagram reports about problems with connection of accounts from browsers that have any other language settings than English. Please, try to change setting to display you browser in English and try again;