TP-Link/Tapo plugs - unable to add

I have recently added 2 new plugs, using the Tapo app. They’ve appeared in the discovered list of devices, but I’m unable to add them.

It comes up with an authentication window, which I understand is for the TP Cloud authentication - but no matter what username/password I add, it fails. I’ve even tried resetting the passwords, to check I’m not entering something wrong!

What am I doing wrong?!

Thanks in advance

NB: the error behind the modal is because a device is currently offline intentionally.

Joining this conversation as I am having the exact same issue with a TP link KP420 light strip. I’ve confirmedcthat HASS and light are on the same network, credentials are correct etc. Seems like this is a known issue. Anyone know what the deal is?

I’m getting the same thing with P100 Plugs - I’m running my HA within a docker container, no cloud.

Also subscribing to this thread.

I ended up deleting the integration and rebuilding. Pain as I had to add all the items back to automations, areas etc!