In case members can only register on your site via ePin, set the Sole Payment Option to Yes. This would make the ePin field mandatory on the user registration form and a visitor would need a valid unused ePin to complete his registration. If this value is set to No, a visitor will be able to register on the site even without specifying a valid ePin. In this case you would need to manually mark the member as Paid / Unpaid under Users -> All Users or assign a valid ePin to the user on that page. Alternately, the user can also input a valid ePin and upgrade his account to a paid account from his Member’s Area.
The eventual path depends on how cryptos develop - if Bitcoin becomes an alternate to gold and a store of value for a new generation, and can hold 1135 got new highs to form a trend sequence above 20k, then the outlook is very bullish. This will have huge implications in the longer term as we could then expect at least another multi-year, proportional rally to the first 5 wave sequence after a long period of consolidation.