I'm using server-side generated firebase's oob codes (like email verification and password reset) for implementing an organization/member pattern within my application.
I want to be able, as an organization owner, to invite members, who will receive an email containing a link so they can sign-up for the first time for my application, getting its email verified and performing a first-time-sign-in password reset.

My problem is, the oob codes have too little validity time for my use, and my invited members are getting "action code has expired" errors 99% of the time.

I want to know if there is a way to increase the expiration time for the oob codes, avoiding me having to reengineer the whole auth stack. Also, any suggestion for better ways to achieve this would be very welcome. =)

Thank you in advance!