I purchased script from here. When i purchase a script ,its cost is 80$ and life time support is free. But now script cost is 20-22$ and need new license require. WTH is this ?
A seller can change the price and/or support/upgrade terms and that would apply going forward, but it doesn't change the support/upgrade terms for existing licensees. When someone purchased something, their support timeframe is locked in to whatever the terms are at the time of the purchase. For example if you purchase something that comes with 5 years of support and they later change it to only offer 6 months of support, you still have the 5 years of support/upgrades since that's what it was at the time of your purchase.
Shouldn't you be taking this up with the script seller? And as per what you wrote above "life time support", so you need to be asking the seller if it's just life time support and not updates as well. To contact the seller, view the market place listing, click their avatar (top left, just below the breadcrumb) and then click "Start a Conversation".
At least download should be available for me. I think this happen due to cluster failure in june. Otherwise ,may be i am able to download latest versions.
Any license you have would be valid for whatever period of time the item offered free downloads as of the time of your purchase.