Simply register on SurveyCake using your Email or Facebook account. Once you are in the survey dashboard, click the "UPGRADE" button in the upper right corner.

After clicking the button, the system will guide you to bind your credit card. Once completed, you can immediately enjoy the features of the PRO plan! Users subscribing to the PRO plan for the first time will enjoy a 14-day free trial.
The billing cycle is calculated monthly based on the time of successful subscription. If you cancel the subscription before the next billing cycle, your PRO plan will switch back to the BASIC plan before the next billing cycle begins.
For example: If you upgrade to the PRO plan on 10/1, you will experience a 14-day PRO plan trial period. If you decide to continue using the PRO plan, the payment is expected to be deducted on 10/15 after the 14-day trial period ends. However, if you cancel the subscription before 10/15, your membership status will revert to the BASIC plan on 10/15.
Please note that due to possible discrepancies in the actual billing date, the above example is for reference only. It is recommended to check the actual PRO plan billing date in the account settings page's upper right corner.

FAQs
Why does it show subscription failure after subscribing?
If the webpage shows a subscription failure message after entering credit card information, please remove punctuation marks (e.g., ",", "-") from the English name when using a credit card for payment.
Why am I still unable to use the PRO features after subscribing?
After upgrading to the PRO plan, you can start using the PRO features at once. If you are unable to use them, please try the following troubleshooting steps:
Clear your browser's cookies and cache.
Log out and log back in to SurveyCake.
Change your network (e.g., switch from company internal network to mobile 4G network).
Try using a different browser.
Use Chrome's incognito mode.
If using a company VPN or proxy, please disable it.
How to change subscription information such as credit card and invoice?
If you need to update your subscription information, please refer to the Change invoices, payment details page for instructions.
Why am I unable to authorize my credit card and access the paid features of SurveyCake?
Your subscription will automatically renew at the end of your billing cycle, our system attempts to charge the credit card on file. If this authorization fails due to reasons such as an expired card or insufficient funds, you will be unable to continue using the paid features of SurveyCake. To resolve this issue, please verify your credit card information or update your card details.
If you have any questions or concerns about the above instructions, feel free to contact our customer support team.