Hi, the lite/free version is limited to 15 buttons on screen. If you want to remove that limitation you must purchase a license.

If you want to test drive the software with other button types, you can log into the FOP2 Manager, select the buttons tab and disable all conferences you have but one, so you make room for some extensions. If you have many extensions and want to also try/see queue buttons, then you will also have to disable extensions... only 15 buttons will be displayed from the full list you have.

Best regards,

If you have it licensed, and then it lost license, run /usr/local/fop2/fop2_server --test to find out what could be the cause. Paste the result from that command and I can guide you further. You can also contact me via the live help if you see me available. Best regards,