Sorry - must not have explained myself very well.
I purchased a two pack of upgrades from Plus to Pro but I've only used on of them so in theory i still have a 'spare' upgrade.
The question is can I still apply the upgrade (v5 Plus > Pro) on a new v6 licence that I may purchase at some point?
I think you may still not have explained yourself very well. Do you mean you already have an upgraded license, but have yet to apply it to a specific USB GUID?
I assume you would still be able to.
Apparently not - let's try that again!
I purchased the two-pack of Plus to Pro licence upgrades but i only have 1 licence, so i registered the upgrade to that licence and left the other GUID field blank.
The proviso at the time of purchase was that if a second licence was purchased later then the second upgrade could then be applied to that licence - just wandering if this is still the case given the changes to the pricing / no longer offering the two-packs of licences.
I think your terminology is still where the confusion lies. A license is what you bought, actually 2 licenses. A key file is used by unRAID to authenticate a license. A key file is tied to a specific USB flash GUID. You have a key file for one GUID which will authenticate your 1st license, but you don't yet have a key file for another GUID because you don't yet have a USB flash that you want your 2nd license assigned to. You still have a 2nd license though.
I don't speak for limetech, but if you gave them money for a 2nd license then they have an obligation to you.
Or am I still not understanding?
I think we are saying the same thing.
Indeed, i only have 1 key/GUID registered.
My concern was really around the fact that i have paid for an extra Plus>Pro upgrade and the price points have changed. Eg. If i purchase a new Plus licence can i use my already purchased upgrade?
@PeterB - that's what my thinking is too, just want some confirmation from LT to that effect.