patch simulation inCST

i get some warningswhen run frequency domain solve:

1)The length ratio between the shortest and the longest model is
1:800.This is often caused by modelling thin metal layers by using
solids.if this is the case here,it may be adventageous to model
the metallizations as infinştely thin sheets.
2)could not enlarge the distance to the open boundaries.Please turn
off the "add space" option in the solver specials and that there is
enough space between the structure and the open boundaries.
3)there are no triangles asssociated with port 1 which indicates a
mesh generation error.
4)could not generate mesh
what can i do?

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