‘Licence key invalid’ after downgrade to personal Post date Home › Forums › Calendar Products › Events Calendar PRO › ‘Licence key invalid’ after downgrade to personal This topic has 0 replies, 2 voices, and was last updated 6 years ago by Support Droid. Viewing 1 post (of 1 total) Author Posts March 21, 2018 at 6:24 pm #1485563 Support DroidKeymaster This support thread is private. Author Posts Viewing 1 post (of 1 total) The topic ‘‘Licence key invalid’ after downgrade to personal’ is closed to new replies. → Please verify your API key is correctly entered on the settings