How do I remove read-only entities

I am pretty new to all this, please suggest better sub if this is the wrong place. I have a Meross smart plug that I was using with the Meross Cloud IoT integration.

It worked ‘well’ enough but something happened and I had to re-add the device. Then all my automation stopped because after re-adding the plug is given a new entity name. (old name with number on the end)

Now I searched a couple of ways mentioned here to remove, including removing the integration, at which point was led to believe I could delete them, then re-add fresh again… that didn’t work. Now I have 5 copies of 4 different entities (volt, watt, amp, main, from 1 smart plug)

I have ordered some other plugs now, and will relegate these ones to non-homeassistant duties. But I am still left with 16 entities really clogging things up.

Is there actually any way to remove these?
Cheers.

have you restarted HA since you removed the device?

after you restart they should (hopefully) be removed automatically.