Follow these steps:-
Register with an email and verify.
Scroll down and select the “Redeem” option.
Copy and paste one of the following code:
H6944-CVHP8-XEBGC
BBGQ5-YTMBQ-9K5PB
Use this for unlimited times 😉
Temp email to use: https://temp-mail.org/
TikVPN signup link: https://www.tikvpn.com/sign/signup