Hello all, first timer here!

I have a trip coming up mid-August with UA. I booked using UA award miles, however it may be impossible to travel given the situation where I am at right now. So, I cancelled the booking today inside the 24-hour period for a refund and re-booked for similar itinerary , using the miles returned to my account.

Have any of you had an issue doing this for x amount of times?
Thoughts if I do this again a couple of times more? Would that cause trouble?

Thanks all and good day!