1. There is a limit check on all brokerage platforms! This is to ensure that there is a layer of safety to protect against fat finger trades. Yes, we also do have such a thing and it is subject to change from time to time. You can easily buy 300 - 5000 quantity without breaking a sweat.
2. We don't have any limits on the strike prices. You can trade any strike price.
Hope this answers your questions
@platosaurus