# Troubleshooting

- [Why did my customer's subscription automatically pause?](/docs/support/troubleshooting/why-did-my-customers-subscription-automatically-pause.md)
- [Why is my customer's shipping address invalid? (Phone number formatting)](/docs/support/troubleshooting/why-is-my-customers-shipping-address-invalid-phone-number-formatting.md): Phone numbers that don't match Shopify's required format might throw an invalid shipping address error.
- [Can’t find the answer to your question?](/docs/support/troubleshooting/cant-find-the-answer-to-your-question.md): We’re sorry you ended up here. But, this isn’t the end.