It's not clear he'll win, I'd maybe even bet on a narrow-loss though we'll know for sure in 2 hours, but all campaigns agree was a strong showing. If not first place, likely second. His polling had him doing worse, so delays in him celebrating beating expectations are bad. And it's undisputed that this bug happened early in the process, so at a time when nobody had any idea who this would hurt/help.
(Also, the issues weren't all app-related. My understanding is that the non-tech issues related to counts took much longer to figure out.)