If you’re suddenly not receiving the SMS authentication codes any more, there are a few things to try. First, clear your browser cache or try logging in from a private/incognito window on another device – sometimes cached data prevents the 2FA page from refreshing. Next, double‑check that the phone number saved on your Shopify account is correct and that your mobile carrier isn’t blocking short‑code SMS messages. If you have recovery codes for two‑step authentication, use one to log in, then turn off SMS 2FA and re‑enable it so a fresh pairing message is sent. There were reports around 20 Oct 2025 of Shopify’s SMS service experiencing an outage, so the problem may be temporary.
If none of the above works, use the “Can’t log in?” link on the Shopify login page to contact support. Provide your recovery code or identity information so they can disable two‑factor on your account and let you log in. Once you’re back in, you can set up SMS authentication again.