PiStage can directly trail in one month after installation.
Please execute PiStage Tools in Maya toolbar.
It should popup warning message to describe the error code.
We need the error code to check your situation.
me too~error code:900390139035
Our support forum has been moved to .
Please register a new account (or use the account you registered on our file server),
then leave your questions about licenses over there (under licenses category).