Zigbee Blind Motor Limits

My LY-1690 Zigbee blind motor is paired successfully with a Tuya GW006 hub and appears under the Zigbee devices in Smart Life. I close the blinds and start the ‘Start Study’ calibration .The motor consistently stops before reaching the fully open position.
There are no other “set limits” options showing in the app.The remote has P1 and P2 buttons on the back but I have been unable to set the blind limits with these.Any help in setting the bind limits would be greatly appreciated.

I don’t own one, but have you tried this? Improved instructions for LY-1690 blinds motor - Devices & Integrations - SmartThings Community