Suddenly.
I'm not sure when I stopped being able to but was posting on chat threads from my android phone with no issues and now I get a message saying [image name] jpeg is not a file type that is allowed for photo 1/2/3 etc. This happens with pictures I have successfully used before.
I haven't changed anything my end and can't have used my limit (due to the not being able to post thing 
). I use my phone browser not the app.
Can anyone solve the mystery? Grateful for all answers even if they point out I'm being a twit as this is as likely as anything else sadly. Including, probably, not finding my answer when I read previous threads.
TIA