The Wrestling Observer Newsletter reports WWE's app did indeed crash during last Monday's episode of RAW.
The crash was due to the volume of users accessing it after WWE prompted them to download it to vote on the matches. WWE did plan on Randy Orton being the popular choice and winning the poll to face CM Punk.
Chris Jericho did get voted by fans and WWE honored the true results of the poll. Jericho and Punk were given a short time to put a match together, as was Orton and Wade Barrett. The report states when Jericho found out he got 57% of the vote, he was shocked and had already planned out his match with Barrett. This caused quite a scramble backstage.