29 hours, no response.
It is possible using the information from the bike display, that the wiring or controller is bad instead of the motor. I wouldn't just go buying parts without further confirmation of a motor problem.
Mahle parts are possibly made in switzerland, and hence more expensive than parts from the country of 1.4 billion political prisoners. I tried to buy a mahle kit for that reason in 2017, with with motor, controller, battery, which was $2000. By the time I saved up the money san diego cycle stopped selling mahle conversion kits and mahle was only available on bicycles. Orbea is a drop handlebar bike and IMHO suitable only for people that want to go around bashing their heads into trees signs & culverts.
If you show a picture of the connector, maybe one of us will recognize it as something you can replace with a motor bought from *****. Not likely, proprietary patented connectors are one of the practices companies use to make sure only authorized repair parts are used.
If a hall effect sensor is shorted, you may be able to replace it with one from a dead ****ese hub motor. Those sensors are not compatible with the honeywell sensors sold at electronic supply houses, so I know of no other source. Maybe in quantities of 10000 from alibaba, if you are willing to give away your birthdate to make a purchase.
If the winding is shorted, a meter to accurately test a half ohm or whatever inductance it has is >$200, so kind of a long shot on you saving any money buying the meter. Motors generally can't be rewound, only have shorted outer turns pulled off (on AC pump motors costing >$1000). I've been trying to buy an inductance meter. The japanese vendor of the CH-500 went invisible 6 months ago. ****ese **** meter or nothing the market tells me.
You could convert to another brand hub motor that is cheaper if you buy a kit with motor, controller, brake handles, sprocket "pas" sensor, switch pad etc. This would be a messy install with wires wrapped to the frame. I ride a bike converted with one of those. Main problem I have is unwrapping the wires on the crossbar with my shoe when climbing on. But maybe you are not over 60 & stiff as I am.