If one is rejected for any reason the processing fee is non-refundable. 🙃
My American mate recently applied, had to upload the confirmed flight booking, then in another section, he uploaded his credit card receipt for the flight booking (leaving LOS in 57 days)
For accommodation, he uploaded the same confirmed booking PDF that he'd received directly from his serviced apartment twice, but paid in cash later after he'd arrived in country.
His single entry tourist visa was approved in 36 hours.