pokemon-go
Something strange just happened. I tried to spin a Pokestop right as it was turning to blue, but it wouldn't let me.
I impatiently kept trying and eventually it said 'try again later'. So I restarted my game and now the Pokestop is purple! But the other ones around me (I'm in an area where I can reach 4) are able to be used perfectly.
Did I lose my items?
In the main menu shop, you can purchase a Lure Module to be used at Pokestops. These attract wild Pokemon not only for you, but for other people as well.
Per IGN - PokeStops, there does not appear to be an overall maximum. There is a maximum number Pokeballs you will receive, as well as randomly receiving various other items as well.
(Emphasis my own)
Most often, a PokeStop will grant you three to four items at a time. Until you're level 5, PokeStops will grant you exclusively PokeBalls and Pokemon Eggs. Once you reach level 5, at times PokeStops will generate up to six PokeBalls, and other items such as Revives and Potions to use now that your trainer can access Gyms and battle other Pokemon.
Best Answer
Look at your diary and you will know if you got your items or not. Sometimes i've the same issue and i always get items.