Hi
I have a Tapo Smart plug P110 and I get the following error any ideas how to fix this
Connection error: Unsupported device 192.168.0.193 type SMART.TAPOPLUG with encrypt_scheme EncryptionScheme(is_support_https=False, encrypt_type=‘TPAP’, http_port=80, lv=2)
The device shows and works on both the TAPO APP and Alexa but HA is having issues
Ta all
Did it work before?
Any recent updates you installed that may have changed functionality?
Yeah it was, for some reason or another it lost connection on the APP then I got it connected but HA will not connect to it
And while that was going on you updated the app by accident/intentional? 
The FAQ tell which button to flip in the newer app version to make HA working (again) for now 
Q2: What should I do if my Kasa/Tapo devices can’t be integrated into third-party apps like Home Assistant?
A2: You can enable Third-Party Compatibility on Tapo App …
Turning third-party compatibility off and on again is not working unfortunately.
This was working so I guess something changed with the Tapo device to stop it working, but all other Tapo devices are continuing to work ok.
So whilst you say it is not supported, it was previously working.
If it helps, I get this when I try to reload:
responded with 403 to handshake1
If I try to reconfigure it gives the TPAP issue mentioned by the OP and turning third-party compatibility off and on makes no difference.
Is there perhaps some sort of cache somewhere that’s not registering the change made to third-party compatibility?
Did you end up figuring anything out?
I’ve got a similar issue with the same connection error, on my P100.
The device was also working fine for a long time, then home assistant suddenly stopped seeing it a couple of months ago, and now I can’t reconnect either.
I didn’t make any changes to my tapo app, or update any firmware on the TP-Link side.
It’s likely I upgraded my HA version in between when it was working and now, but I’m not sure if that’s just a coincidence.
Edit: I ended up doing a combination of resetting and re-adding the device to tapo app, as well as disabling and re-enabling third party access via the tapo app, and was able to have HA successfully find and connect to the device again
I had the same problem and I was able to solve it.
Turning third-party compatibility off and on solved it, but wait 5-10sec before enabling it again.
After that a waited 30sec and then TP-Link Smart Home did find my P110 by leaving the host empty.
Thank you for this!
I just updated HA core and OS a few hours ago and one of the Tapo Smart bulbs was not working. I initially had it "third-party compatibility" off on the Tapo App and now I turned it On and it seems to work.
For anyone looking for that option on the App (I use Android)
On the main screen, click "Me" on the bottom right -> scroll down to "Services" then "Third- Party Services" > then toggle the "third-party compatibility" option at the bottom.
Thanks. I need to do this as well. Strangely enough only one of my Tapo L900 LED strips started playing up. The other identical one didn't give a problem in HA. And indeed both worked fine with the Tapo app.