Yeelight strips do not change colour correctly and cannot turn off

Hi, two of my Yee light strips are not behaving properly - the colours do not change correctly and they cannot be turned off.

When turned ‘off’ one changes to green, and for the other it changes to ‘blue’.

I have already reset both devices but it does not fix the problem. Please see the videos in the links below.

Please could you kindly advise? Thank you for your help.

Video 1:

Video 2: