What should I do if Fetion has restrictions on sending short messages for free?

You use Fetion service through PC client, and the amount of short messages sent is limited (only the short messages sent by the other customer's mobile phone). Each number can send up to 600 messages for free every day and up to 10000 messages for free every month. If the number exceeds the upper limit, you can't send SMS through PC client in the current month. There is no limit to the number of short messages sent to friends through the mobile phone client, and there is no graphic verification mechanism. When you want Unicom and telecom customers among your friends to send short messages with non-Fetion friends (including Unicom, Telecom and mobile numbers), you will generally charge a short message fee. The number of messages sent is limited: 50 messages can be sent every day and 200 messages can be sent every month. You have reached the limit, and you will be prompted to reach the limit. Transmission frequency limit: send at most 2 pieces every 10 minute and 3 pieces every hour. Pop-up rule of graphic verification code: Pop-up the graphic verification code once every 2 pieces are sent (within one day).