Unresolved Slice Error

Hi guys! I only start with my printer....How I can resolve if I see: Start G-Code should not contain a G29if you are planning on using print leveling? I'm not understand how I can change it....
And why my printer does not see OBJ files for print? How I can resole it? Help me pleas!!!!

 

Please close and then re-open the Matter Control Software.

Please delete all the printer profiles you have set up in the software and create a new one. You can find this by clicking on the status bar next to the connect/disconnect button.

Make sure you choose R1/R1+ as your printer model.

This will clear any settings you installed and put everything back to factory default settings.