I would like to use my TCMS v2 software to edit data while my device is disconnected and i cant enter the software it keeps coming up the screen for a terminal connection and when i click cancel all the buttons on top are disabled

You can change the terminal model to a other model than the TA300 and change the connection to USB in the setup fingertec terminal screen and make sure its Enabled to use the TCMSv2 without connecting to the TA300 terminal. If you want to download the data from the TA300 or do any function from the software to the terminal, please connect the terminal to the TCMSv2 and change the model back to TA300 and change connection to USB/CLient.