Firstly, welcome to the community @designlobby!
Regarding plugin support for ClassicPress, we have been having a ton of discussions about the best way to approach this but ultimately landed on the following (read more here).
The best way to get support from the plugins you have mentioned above is to reach out to their respective developers/teams and ask them to provide support for ClassicPress. At the end of the day plugin developers will not support something they don’t see their users using and if no one is asking for support for ClassicPress it will never happen. The more of their customers who ask, the more likely they will dedicate resources to ensuring their plugin supports ClassicPress going forward. 