Why does the XAG R150 App show "Please release the single-hand controller. (Error code 65543)?

Long press the square button on the middle of ACS2 to unlock.

To ensure safety, this lock is always in place every time the R150 connects to the ACS2, and then after each operation/plant treatment using the app, it will be automatically locked again after about 10 minutes of inactivity. This is considered normal.