I do not think if spinly.io has actually enabled that feature on their otherwise, people could have activated their 2Fa on their account to make sure they enhanced their security firmly.
I check my account, click on About me, and go to the account page for settings like password but till today, there is no option to activate 2FA for my account.
There is only Deactivate my account at the bottom.
It's unsure why Spinly.io team don't consider that 2FA is important for user account security and why they don't add it for users.
With AI rises and more hacks recently from casinos to centralized exchanges, I hope that Spinly.io team will change their mind on it.