not really fasten with built safety net

We have a Ultrafit trampoline 305 bought with a safety net. Unfortunately, you can not put the rain cover right to the edge, when the network is set up with, it would be otherwise if the coating would be separated on each rod and could push the plane respectively under the net and then tighten. Since the cover with power can not be properly attached, it considers it correct and blowing in the wind and also protects therefore not really rain. Pity!