It can be purchased again, but not too many times, otherwise it may be judged that the refund function has been abused (because some people use the refund mechanism, and play for two hours after buying, and then play for two hours after refunding, and keep repeating until they have played enough), leading to no refund in the future.
Whether the refund is successful or not is judged and handled by the Steam official, just wait for the processing result Since it has played for more than 700 hours, it is estimated that the refund is unlikely