Downloaded Latest Firmware Update: Alexa Unresponsive

I have Two Yee light colour LEDs.

I updated the firmware yesterday (18/06/21) and now cannot fully control my lights with Alexa.

I can control On/ Off and Colour Temp.

But now cannot change the colour through Alexa. It just says they are unresponsive.

I do however have full control on the Yeelight app.

I purchased these bulbs with the understanding that Yeelight was fully integrated with Alexa, not partially.

Is there anything I can do to troubleshoot this?

So far I have reset and added both lights back onto the Yeelight app.

I’ve disabled then enabled the app in Alexa as well. None of which have worked.