LThers is chance that your ip banned... Did you just open lot of bot in same time,?
Or theres is really no pokestop around you?
To make sure of this try use visualizer pokemon go bot... Mybe thers a chance?
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Ermmm mybe yes and mybe no...
Cuz i got this several time yesterday and botting till now nothing happen...
Im using 1-7 km per hour btw