A promo code is activated in the chat with the @obfsnbot bot: send the code as an ordinary message. There is no separate promo-code field in your account; activation always goes through the bot. A promo code adds subscription days rather than a discount on payment.
&XXXX-XXXX-XXXX-XXXX.If someone sent you a link to the bot with a promo code rather than the code itself, just open it: the bot picks the code up and activates it.
The term is baked into the particular code, from one day to a year. On activation:
The subscription link does not change, so there is nothing to import into the app again. If the app has already stopped connecting, refresh the profile in it after activation.
Every promo code is good for one activation: once it has been used it stops working, including when someone else got to it before you.
Worth checking when the bot says the code is not found or already used:
We publish them ourselves: in the @obfsn channel and in messages from the bot. Codes from other sources may already be spent.
If you have no promo code, free days are available for inviting friends and for tasks.