Make sure that you are selecting the pop-up TMT250 field after connecting your device to your computer, instead of clicking "Create new configuration".
After clicking the pop-up field, you should be able to see the window below with your loaded parameters and all the necessary tabs for TMT250 on the left hand side.
More information about TMT250's first start could be found in our wiki page: https://wiki.teltonika.lt/view/TMT250_First_Start
Strange, below are the configurator tabs I see.
Compared to your picture tabs User interface & Keyboard are missing. Instead of them Accelerometer Features are shown instead.