New problem with autofocus

Hello, I have been using SGPRO for a long time but in the last days I am unable to focus with AutoFocus. The parameters I have are step size 28, minm. star size 6, bin 2 and 9 steps.
Every time I press run the lines of the parabola are always red (before they were green) and although the focus I get is within acceptable limits approx. 0.9 HFR the case is that it starts over and over again to start the cycle ending with the message: SGPRO AUTO FOCUS SMART FOCUS FAILED (TOO MANY RANGE SHIFTS)
The telescope is FSQ85 with Robofocus. What can happen now that did not happen before?. Thank you

Please see here:

Thank you,