I'm having the same issues. I upgraded my PDM 14 to PDM 15 and when I went to launch PTB from the menu bar, I received the error: "Invalid key. Your license key is invalid for this version of the Parallels Toolbox. Please downgrade or buy a new license." The new version is 3.0.5, which I believe was installed alongside PDM. I have three subscription licenses. Trying to tells me it will de-activate the license on another computer, and the third simply replies "The license server doesn't accept your product license."
Last edited by a moderator: Aug 10, 2020