I paid and the balance didn't arrive — wait a minute and reopen the wallet. If it hasn't arrived within 10 minutes: Support → "I paid but my balance did not arrive".
I was charged twice — contact support with the time and amount. Every payment is added to your balance only once.
The payment was declined — try another method (Google Pay, PayPal, another card), or contact your bank.
"You can switch currency again on…" — after your first top-up you can switch once every 30 days.
"You can send … now" — of the balance topped up by card in the last 5 days only 20 can be sent right away; the rest after the date shown.
"You've reached this month's transfer limit" — the limit is 100 a month and renews at the start of the month.
"Verify your phone number first" when sending credit — More → Account & verification → add and verify your phone number.
I sent credit to the wrong person — transfers are final. Ask them to send it back.
My bundle minutes weren't used — the bundle is for a specific country (and sometimes mobile only or landline only). Special numbers and some networks are not included. And make sure the bundle hasn't expired.
I didn't get the invite reward — your friend must sign up with their phone number, and your reward arrives on their first top-up. The limit is 20 rewards a month.