Facebook & Messenger App problem after reverting back to 8.1 from windows 10

[niaj36]

i updated my lumia 535 to windows 10 using windows Insider. after updating my phone i observed some problems so i revert back to windows 8.1 after 1 year. now Facebook & Messenger doesn't work on my phone. when i open Facebook app it shows me "sorry, there was an error". when i try to open Messenger app then it shows me "REST API is deprecated for versions v2.1 and highre (12). have anybody any solution please?

 

[TechFreak1]

i updated my lumia 535 to windows 10 using windows Insider. after updating my phone i observed some problems so i revert back to windows 8.1 after 1 year. now Facebook & Messenger doesn't work on my phone. when i open Facebook app it shows me "sorry, there was an error". when i try to open Messenger app then it shows me "REST API is deprecated for versions v2.1 and highre (12). have anybody any solution please?

You are better of going back to WM 10 as Skype no longer works with Wp 8.x as well.