msg_validation_error

Request to Sketchucation = ERROR_A0C

now is my new macbookpro

Tried many times

still can't solve it at the moment

mac OS 10.15.17
sketchup 2017
ClothWorks_v1.7.4

I just bought the serial number

It can’t be verified

how to solve this problem

My English is not good, now I use translation software