Hi,
There might be an issue with the V20.1 and especially with CFX. But possibliy you are using a newer remeshing script (in new releases ?) and then using it with v201. Are you able to run with the latest release v23r1 ? For ice remeshing, there have been so many improvements since v201 e.g., in the interface. setup and robustness, I would highly recommend to run with v23r1. Thank you hope this helps.