The new European PSD2-regulation (Payment Service Directive 2) obliges Stuvia to take a different approach to payments. Originally you are used to us being the "intermediary" for all your payments. Due to this new regulation, we can unfortunately no longer fulfill that role.
All sales on Stuvia now go through payment provider Stripe. It takes about 4 working days to release the money from a customer to you as the seller. Stuvia has no influence on this. These 4 business days are used to evaluate the risks of the transaction and to make sure it is a secure transaction.