If you've paid for your portable WiFi but can't connect, first make sure your device has the WiFi connection set up correctly. You can try to restart the device or forget and reconnect to the WiFi network.
If the problem persists, it is recommended that you contact the customer service department of the Portable WiFi, provide your account number and payment information, and let them help you solve the connection problem. They may need to check your account status or provide other technical support.
The solution that the portable WiFi can not be connected by paying a fee is as follows:
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Check the recharge record to confirm whether the recharge is successful.
Check that your device's WiFi connection is normal and that the wireless network is configured correctly.
If you cannot connect to the network, you can try to restart the portable WiFi.
If you still cannot access the Internet after restarting the portable WiFi, you need to contact the operator's customer service for consultation or maintenance.