What should I do if I extract the proxy IP but cannot connect?

Some users reported that they had already extracted the proxy IP, but they just couldn't get through. So what is the reason for this situation? Summarized the following two situations:
1. The wrong package was bought. The software or program requires http proxy IP, but the socks5 proxy IP was bought. Contact customer service for assistance, and you can switch to the corresponding http proxy IP package.
2. The authorization is incorrect. In the "bind terminal IP" authorization mode, it is not the public IP of the terminal using the proxy or fixed export IP that is bound; in the "username + password" authorization mode, the website login account password is regarded as the user of the proxy IP Name and password, or use akey as the password of the proxy IP.
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