Are Yeelight bulbs region locked?

So basically I will buy an EU Xiaomi gateway. I will also buy various Yeelights from AliExpress. I want to use bulbs in the Mi Home app, with EU server. Can I connect Yeelights in Mi Home app with any server? Sellers on AliExpress don’t mention it at all.

No. Only in Yeelight app.

Yeelight App doesn’t region lock but Mi home does