Need to downgrade from 5 to 3 - huge issue

Hi stackideas.

I have a huge issue at hand.
I use a template from joomlart, which had a theme for easyblog integrated.

I paid for easyblog for the one reason that we wanted the theme that fits our site.

However, the easyblog theme is not compatible with the newest version of easyblog, and unless i can downgrade to version 3, the easyblog component is of no use to us :/

I imagine that other people has this issue aswell, since the templates needs time to upgrade once you post an update.

Can you help me downgrade to version 3 so that i may use easyblog?

Best regards.