You just need anew top rail and that maybe easier said than done depending on how old the trampoline is as we normally change the design and size every year to screw competitors. How many springs is your trampoline as that will help narrow down when looking for the part?
Lots of springs. The diameter is 4.7 meters.
The trampoline is from a local DIY store, so the actual brand is unknown because it is branded. I will see how long it will hold. 2 years is probably enough.