Pay per article

This addon might help:
https://www.paidmembershipspro.com/add-ons/plugins-on-github/pmpro-purchase-access-to-a-single-page/

thanks for your advise. Does it mean that installing this addon there will not be other solutions available (monthly payments etc.). Meaning, I should choose, either pay-per-post with activation of this plugin, either standard features of PMPro?

and other trouble is that the standard plugin conflict with visual composer – as you can see now on https://www.bzo.gidulyan.com – there are empty places ?? as the plugin don’t allow to show tumbnails and excepts, even this option (to show them) was chosen.