Recently, I was playing Pokémon GO. It was fine, and there were no problems whatsoever until I spun a Pokéstop. It didn't come up with anything at all, apart from the error message "Try Again Later". I know that it is not a softban, since I am able to battle and train gyms, catch Pokémon, place them in gyms and collect my Pokécoins. Also, my Pokémon seem to be coming out of the gyms unnaturally often.
I am asking for a solution to this, and an explanation of why this is happening.
Yes, I did try again later, and I wasn't moving at the time.
This was on every Pokéstop I tried and it lasted more than 24 hours. Also, I was walking for some of it. I can spin it now, but every now and then, it almost gives a 24 hour ban!
By the way, I am also on iOS, which seems to be the place of most errors...