Redirector do not seems to work on Vanilla 3.3

Hello,
My Vanilla 3.3 instance at https://forum.pluxml.org was imported from a punBB forum. The Redirector 1.3 plugin is activated but don't seems to work.
This punBB URL : https://forum.pluxml.org/viewtopic.php?id=4532
Is not redirected to : https://forum.pluxml.org/discussion/4532
And I don't see why.
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Comments
Maybe
https://open.vanillaforums.com/discussion/comment/257726/#Comment_257726
Note that you don't need the redirector plugin. Just visit /dashboard/routes and add a route:
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Hi, thanks for your help. I tried both solution without success. I also try to add a redirect rule directly in the apache virtualhost, and in the .htaccess but I still get a 404 on a the punBB URL.
Here is the .htaccess (I use the Vanilla default one)
And the route from the dashboard :
is commented out