Adding workspaces was difficult

I downloaded the latest version and am running totalspaces2 on osx 10.14.6 on an MBP.
After installing I could not click the plus signs to add rows or columns in the layout section.
then I killed the totalspaces2 process from the terminal and restarted
then I could add rows and columns but after a serious of rounds between add spaces and pressing the plus buttons.
I could not just add 16 workspaces in one round.

Hi, I’m having the same problem with 10.14.6. Cannot add spaces to the Layout preferences. It remains blank (black). When clicking “Add desktops”, the program returns the following error: “Could not create all requested desktops. The system limit is 16 (plus specials).” My system has four spaces.