I paid for my Pro upgrade but they did not send any codes to upgrade. They are impossible to contact. Any suggestions?

They didn’t provide any information to upgrade but they have my money.  Any suggestions

Hi Daniel.

Please contact the sales department at [email protected] if you wish to clear up the situation -and provide relevant info.
or at  https://support.emclient.com/
You should have a reply in 1 day or 2