Please check my post above. Nowadays it has been happening a lot and those are the two reasons for me. I believe IF may be going through some background changes. It is probably the same for you.
If the issue persists you can contact one of the GMs (*Shruti*, Aahaana, or gk_09) and they can help.
I see that you're the IPKKND forum. If you ever have any problems in that forum you can also contact either myself or DeviatedTesoro. One of us can edit your comment as well if needed.