Connect to accept payments to the site

Hello, there! I have a question for you: I am disabled and somehow make a profit online store. I had a problem connecting the payment system. I started to connect roboboxass to the site, but it has been 3 weeks and after my payment from them silence. Teh. Support responds with template responses "Wait". I have a payment on the site through Yandex Money. I also added bank cards. But the problem is that people who do not have a Yandex wallet can not pay for the goods. Before that, I had a person who made a website and he did that people without a Yandex wallet could pay for goods with bank cards and Yandex money. But this person, having received an advance payment and not finished the site, disappeared. Can you tell me how to connect a payment system to the site? Can you tell me something else?