The answer depends on who you are.
You charge privately or with your personal wallet (STROOHM App):
Go to Me > Your team.
Tap + Add payment method.
Enter your card details (don't forget the CVC code) or follow the steps for Apple Pay, and tap Add card.
You can then charge again. You can also top up your wallet.
You are a fleet manager or admin of a company account (STROOHM Platform): set up the payment method of the company wallet via your account, the three dots (•••) > Payment > Settings. There you choose between linking a credit card, SEPA direct debit or pay by invoice.
Payment method suddenly gone? A previous payment may have failed. You will receive a push notification and an email about it.
Keywords:
no payment method | add payment method | link card | cannot charge | payment settings | sepa | credit card
