None of them will work if you type them yourself.
!allow and !disallow will only work for &s.
!tallow and !clearallow will only work for &s and @s.
As for the timer thing, change .timertallow $+ $cid $+ $chan $+ $2 off to if ($timer(tallow $+ $cid $+ $chan $+ $2)) { .timertallow $+ $cid $+ $chan $+ $2 off }
