Suspension straps need a sturdy TRX anchor to work well. An unsteady anchor will make you think twice about doing your routine. It can cause injuries if you ignore the problem. Below are things to remember when setting this up:
Find a solid wall on which to mount. Plaster and drywall are not ideal because they can easy get destroyed by the pulling force of the straps. Cinder block and bricks are not recommended either. Look for a stud that can support the load. Concrete walls are possible options as well.
You can use a drill to make sure that the screws can get into the solid material. If you are not comfortable using power tool, then you can ask a professional to install the anchor for you. This should provide you with the best possible results. Enjoy your new exercise routines.