Personal experience
Overall, it's a good service, but it has several major problems: 1- There is a subscription fee for using the panel, which is not common worldwide. Usually, fees are charged for services, not for using a control panel! 2- The control panel uses Google's reCAPTCHA V2 for login, which is extremely annoying! For instance, I never register on sites that use Google reCAPTCHA, or even if I have registered before, I avoid logging in because it's really time-consuming and ridiculous. Sometimes it gets stuck and doesn't pass. Imagine if you forgot your password and had to enter Google reCAPTCHA every time you try to log in. It's a disaster, taking an enormous amount of time and energy! Honestly, I avoid entering any website that uses reCAPTCHA unless absolutely necessary 3- The control panel is generally good, but sometimes displays irrelevant errors! 4- The mobile application doesn't use native technologies and doesn't perform well. 5- The support service doesn't really do much for you. If you have a problem, their attitude is like 'it is what it is.' Overall, they don't make much effort to retain customers 6- The biggest problem is that you have to pay the numbers' fee monthly!!! Usually, people deactivate their cards for online purchases after making an internet payment to prevent theft from their account. This means you have to log into this site every month and spend about half an hour of your time and energy just to make a two-dollar payment !
