$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
IOS回国VPN【HAIGUI.IN】海归RETURNEES is not a valid tag
The format for a tag can be found on the tags explained page. In short:
- 4 symbols long
- using digits and uppercase letters
- excluding the letter O in favour of the digit 0, and I in favour of the digit 1