Hello there, RPS forum administrators,
right now the forum reports read posts as unread whenever I read it from different devices.
This is due to an ancient vBulletin setting "Mark read posts in a cookie" instead of "Mark read posts in the database".
Would you consider switching from cookies to the database?
This setting is 10 years old and with today's hardware it really plays no role other than annoying users that read RPS from different devices (eg home PC, work PC, smartphone, tablet...).
You can find the setting under AdminCP > vBulletin Options > vBulletin Options > General Settings > Thread/Forum Read Marking Type > Database (automatic forum marking)
Thank you for your consideration.