Please fix - reapply the Mute List to Unlimited

Months ago you lifted the Max 3 person restriction on Mute List to Unlimited for those who are members but not full subscribers.

Yesterday this ability to ADD to my Mute List has been blocked - a pop-up saying - only a maximum of 3 can be done.
Would you please fix this back to what it was - I find it really useful. A great time saver. Stops distractions. Thanks