Then you can't use the TgScanRobot
It works. It just does not display information until you top up your credits balance on tgdev.io website
The bot became paid. Every request you send to robot must be paid with credits. You purchase a number of credits and then you can spent them on requests to TgScanRobot.
The actual prices are described on https://tgdev.io/tgscan page.
The minimal amount of credits to purchase is 200 credits i.e. 2 USD.
You can create account in AdvCash service and top it up with cryptocurrency. Then you can pay TgScanRobot credits with AdvCash balance. See details at https://telegra.ph/TgScan-Crypto-Payment-via-AdvCash-07-11.
You can send free search query to TgScanRobot and check number of groups it knows for the person you search. Based on number of groups you can decide do you want or not to purchase paid access to TgScanRobot. Warning: you can see only 1000 groups for any person, even if bot know more than 1000 groups about that person.
I am looking into to do legit business and provide quality service. Both things require money and time spendings. In return for my services I do not expect you pay me time, but I expect you pay me money.
That could happen because of failure in payment processing or because of you may have missed something. Please describe your situation to support service and it will resolve the issue:
Send @username or numeric Telegram ID of a person to the bot. The bot will return you a list of groups which this person is member of.
Also you can forward a message from that person to the bot. The forwarding method does not always work because a person might configure Telegram to not allow other people and services to extract person's ID from the message which he/she has written.
You can see up to 1000 groups for any person. Bot show upt to 1000 groups even it know more than 1000 groups about that person.