My send button doesnt work on games Facebook

[Android Central Question]

I can't send extra lives or coins spins to my friends like candy crush or coin master. Have uninstalled Facebook and games. Done factory reset. C l.j ear cashe and data. Nothing. It was working awhile back and now it's not. On the bottom of Facebook page it has logged in as my name dont think it was there before. What should I do? Have a Samsung Galaxy s8 and Apple iPad Pro.