Have you tried all resets: On/off at the bottom as well?
Have you checked the brush (suppose its the middle one) you could rotate by hand when inserted easily?
You might please remove the side brushes as well and insert these again.
Check is all sensors (Big one at the front and the 3 ones at the bottom as well) and remove any dust.
If you all have done this and it could not resolve your problem
you might contact the support by adding a video.
(Much better than a Thousand of words )
But please mention : Chinese new year and weekend as well,
And I forgot to mention: Is the Robot fully charged?
I know all these hints may seem ridiculous, but there are so many things which can be the reason for such "beeps"