Can’t Access anymore, developer needs to update to IOS 11 – Birthday Sweet - Birthday calendar & reminder for Facebook Review

Since I updated to IOS 11, I can’t access this app anymore. It was great when I was able to use it as it reminded me all those birthdays, but now I can use it or check what I entered in. Been waiting for developer to update for 4 months now.
Review by R1ca12do on Birthday Sweet - Birthday calendar & reminder for Facebook.