I don't know exactly when you will be able to pay for your subscription using Pindex. I do know that the Pindex page at https://pindex.pindify.com has been updated with new information about how Pindex will be used, and also how that will influence demand. Please find it copied below.
Utility
The power of attorney along with the decentralized distribution of digital content articulate a new paradigm shift in the era of digital culture. Pindify’s marketplace is a solid economic foundation with strong financial opportunities for providers and partners of arts & media. The Pindex price is primarily expressed in relation to how well the marketplace is growing.
Thanks to Pindify’s crosschain ordering system with SprinkleXchange we can offer safe and cost efficient payments with optimal routing. This means that all users can pay to Pindify with any fiat- and most digital currencies (Pindex payments are discounted). The asset is then transfered to a dollar account mirroring our Internal Chip pegged to the dollar. At every payout request Pindify will buy the Pindex and distribute it to our providers wallets, bank accounts or prepaid card in the currency requested.
Consumers & subscribers (Supporters) Direct demand of Pindex.
Supporters can choose to pay with most fiat and digital currencies, but are incentivized by paying with Pindex. They will be able to directly buy, donate, hire, subscribe, crowdfund, and invest with Pindex.
Businesses & brands (Partners) Most powerful demand of Pindex
Media bureaus, Agencies or brands directly, will use Pindify as a tool to organize and promote their marketing content to providers. They fund their market account with dollars in a bank account. Pindify distributed the Internal Chip to providers that accepts the sponsorship offer and pay out in Pindex. This means that a big market account can demand millions of Pindex in one setting depending on price.
Artists & influencers (Providers) Longterm consistent demand of Pindex.
Since Pindify buy Pindex to transfer all payments to our Providers’ wallets, bank accounts, or prepaid credit cards, the demand will be presented on a daily bases. Price will change depending on our demand of Pindex. Since there is a finite amount of Pindex (60 million), it will grow exponentially to Pindify’s demand curve.
Pindify’s tailored solution by utilizing blockchain payments on behalf of providers, who receives Pindex to be exchanged in local currency on demand, and supporters and partners that automatically pays in Pindex. This means business as usual with safety, speed, and cost of the blockchain.” Hence Pindex holders will see the clear payrail with tokens for subscription, trading, funding and branding.