Those who own Diablo 2 Resurrected, if you don’t log in (online) at least once in 30 days, you cannot play it offline regardless of platform.
Source: N4G PC Diablo 2 Resurrected Cannot Be Played Offline If You Fail to Login Online Once in 30 Days
Those who own Diablo 2 Resurrected, if you don’t log in (online) at least once in 30 days, you cannot play it offline regardless of platform.
Source: N4G PC Diablo 2 Resurrected Cannot Be Played Offline If You Fail to Login Online Once in 30 Days