I don't think that VG or PG actually become solid in a freezer ... do they?
Also as they have preserving capacities "built in" they should keep quite a time at a cool temperature.
WTA when I used it only hung around for 3 months or so, and always seemed to be as effective at the end of the bottles as at the end.
It really helped me out, at least 2 out of the 3 manufacturers' WTA did. One was oily, and didn't seem at all as good as wholecig's, cloudy too. But there it's nice to vape either as the base for a DIY flavoring job, or on its own, or added to your ADV in quantiy adapted.
It really does work, as I was stressed, chain vaping, ... craving, on 10ml at 20mg a day, and after a week or so of WTA I dropped down, without noticing, to 3ml, then I based the Nic (or rather WTA

) to 12mg.
I was an unbeleiver, rapidly converted. I must admit I was really surprised at the base in my vape consumption, but when you read up on it, I guess it's logic that it works ...
Hope it's as good for you as for me
Happy WTA vapes
That is if we can still buy it

I had hassles the last time I bought some, and I dooo miss it often, but it could get even worse
These damned laws are turning into an international anti-vape conspiracy, and it's going to end up, in a few douzens of years, that the interdiction to Vape has killed enough smokers to sue the instigaters.
It's an obligation to go Black Market if you don't want to kill yourself slowly with smoking.
Really maddens me, the cartels so greedy that they prefer us under ground, literally, in a wooden (hermetic evidently!) box!
Be damned, he who invented the money race...