This is by far the best motorcycle game in the App Store. However there are frequent bugs and tech support is pretty useless. Message to tech support. Just take the bug report and pass it on to the dev team. You can close the case when the issue is resolved. Take you time and read the information provided in the case details. Dont tell me to update my device when it the updates are current. No, charging the battery does not fix sloppy programming.
MostriDeher about Trials Frontier, v4.1.0