Plugin doesn't use new access token

Hello. I’ve got a problem since I’ve changed expired access token.
After changing access token I noticed that there is still “expired token” error and ajax requests using the old one. I’ve checked mysql but there is stored a new token. Have no idea what’s happening because I have no caching plugins installed.

PS: excuse my Engrish 🙂

https://wordpress.org/plugins/instagram-feed/