Okay.. I need to clarify the way the licenses work, as that's probably the sticking point at the moment.
The license you have purchased does not expire. It lasts "forever".
The license grants you access to upgrades for a period of one year from the purchase of the license.
After that one year runs out, you may purchase an additional year.
All owners of the "old" licenses get a 75% discount over whatever we end up charging for upgrade renewals. At the moment, we'll be charging $125 US, which means you'd pay $31.25.