After a recent update, Messenger developed an unfixable glitch where people are suddenly unable to message me, receiving an error claiming I have blocked them when I haven't. And Messenger Lite showed my entire *actual* FB block list under "active now" regardless of whether I've had any interaction with them on FB itself. I've tried over a dozen fixes and none of the fixes I've tried work. Both apps are broken, unstable and unsafe to use. If you can, I would avoid using them entirely.