Your submission could not be processed because a security token was invalid.

[Spike1337]

We got an strange problem since we switched to an DDoS Portected Host
he using an Proxy Shield so all Users have the same IP
if any member make an post to an Thread and i want to watch them
i see myselfl logged in as the User which posted the post but cant see the Post and if i want to reply
i get this error
Your submission could not be processed because a security token was invalid.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.
and if i clear my cache or press f5 + ctrl its working fine
and if i switch to vbulletin default style on main site style is working and if i want to watch an new thread i see the old style and that bug and in footer the time is incorrect
any fix for this ?

[jefferis]

We are having the same issue. Not sure we have all those security features in place. Certainly not hidden IP addresses. It happens when we mark all threads read

<a href="{vb:raw $vboptions.vbforum_url}{vb:if "$vboptions['vbforum_url']", '/', ''}forumdisplay.php?{vb:raw session.sessionurl}do=markread&amp;f={vb:raw foruminfo.forumid}&amp;markreadhash={vb:raw bbuserinfo.securitytoken}" rel="nofollow" onclick="return mark_forum_and_threads_read({vb:raw foruminfo.forumid});">

Can't use the modification from 3.8 Not sure what to do about this error... vB tech is stumped.
There was a fix for v.3.8 but doesn't seem to be relevant to v 4. https://vborg.vbsupport.ru/showthread.php?p=2420691#post2420691