If your name does not appear on the list, you shouldn't try to install it because the update.zip is encrypted in a way to only be able to work on certain IMEIs.

I'm pretty sure they added all the applicants to the beta program, maybe you wrote something wrong (IMEI or something) as they have mention the in the post.

Hello,
For everyone that is experiencing issues with the Google Play services and the Google Play Store, to be able to add an account and to be able to use them properly, please do the following:

Download and Install the GMS Installer from the Meizu APP Store (If you get no results by searching Google, press on the search on other stores option)

1. Open the app and press Install, wait for the app to install all 4 packages.

2. Go to your APP List in the settings, press APP Permission and look for Google services and Google Play Store

3. Modify all permissions from ASK to ALLOW.

4. Clear Data for both Google services and Play Store.

5. Now you should be able to add accounts and use the PlayStore aswell.

If you encountered any problems whilist doing this, please message me.

Strange, I have MX6 aswell.