Change of email address + Can't install licence to new device

[meirkat]

Hello and greetings to all,

This is my first posting on the forum so please be gentle with me.

I've changed internet providers a couple of times in the last few years resulting in a new email address.
Minimserver has worked great during that time, however I have now setup a Raspberry pi with minimserver on it, but unfortunately I don't seem to be able to install my licence on it. My old device which I will keep as backup is a Synology Nas, and this is the only device I have a licence installed on.

Can you tell me how I can change my old email address I used to purchase my licence with - to my new current email address please?
Also, will I then be able to install my licence to my new device?

Hoping you can help !

Kind Regards
Meirkat