Hi @franms,
Are you able to determine what version of the SWORD plugin you’re using? I’m not sure what you mean by “version adapted to OJS 3.3” - can you clarify where exactly you got the plugin from. So far as I can tell, the plugin may not be fully tested for OJS 3.3 and is thus not added to the plugin gallery. There has been some recent discussion on the use of the SWORD plugin here too: SWORD Setup for Deposits from OPS to OJS - #21 by talknshare
-Roger
PKP Team