The matrix of OJS plugins against compatible OJS versions in this page https://pkp.github.io/plugin-compatibility/ don not include OJS 3.3.
This issue was alredy discussed in the following post that was already closed, so it was impossible to write there:
Are there update on the topic?
Thanks
Hi @razzi,
Thanks for reporting this. We’ve resolved the issues with the PKP plugin compatibility website, and you can now see plugin compatibility for 3.3 and 3.4.
– Kaitlin Newson PKP Team
Thank you so much for fixing it!