I had a ebike, I won't mention names at the moment. I owned it at the end of October 2022. In June it began to cut out half way up a hill, it ran better in July, not brilliant but better, then started cutting out up hills in early August, both the months mentioned were quite warm 28C ect. I cycled the bike back to the shop after calling them and esplaining to them the problem, They said the bike would have to go back to the main hub to be checked. They had my bike for 6 weeks because I was told it would be in a queue with other people's bikes, the queue was six weeks. I got a email saying that my bike was ready and diagnostics found no problems with it. I asked them if they had rode it to see the problem, they said they had. They sent the bike back via Parcelforce. After putting the saddle and the handlebars and forks on with a torque wrench. My partner who's an engineer changed the gear and pedalled the bike by hand in to a low gear, straight away he heard something amiss, the derailleur was hitting the spokes and he noticed that the Hanger had been bent in, so The 3 largest cogs on the cassette could not be used. It is still under warranty, just about, baring in mind it was in the main hub waiting to be looked at for six weeks. Not sure where but somewhere along the line the hanger has been bent and I wonder what other people would do in my situation.