User activation link expires in a few days

See if this points you in the right direction:
https://wordpress.stackexchange.com/questions/23867/overriding-the-default-wp-multisite-notification-e-mail/276244

Thanks, but that just enables me to change the text. I am already using this filter. ??
What I’m looking for, is how long “a few days is” and possibly how to change the length of the expiration of the link?

how long “a few days is”

20-24 hours by default if it’s the one sent by core.

Asking around, I found this:
$expiration_duration = apply_filters( ‘password_reset_expiration’, DAY_IN_SECONDS );

Okay thanks, that filter hook looks like one I need. ??

You are welcome ??