Is it possible to use my personal hotspot when pairing my Envision Glasses for the first time with the Envision App? 

For Android Users

Yes, it is possible to use your personal hotspot. For detailed steps see, Connect To Hotspot

For iPhone Users

If you are an iPhone user, when pairing your Envision Glasses with your iPhone for the first time, we recommend connecting to a password-protected Wi-Fi network or another iPhone's personal hotspot.

It is not possible to connect to your personal hotspot the first time you pair your Envision Glasses with your Envision App, as the only way for your personal hotspot to be detectable by Envision Glasses is if you have the Personal Hotspot screen open from your iPhone Settings. Therefore, as you need to be in the Envision App to pair your Envision Glasses, these actions cannot be done simultaneously.