Regarding your concern, I’m afraid that subscription charge is not available with any EngineThemes.
I’m afraid that it requires to modify in coding and it will change the default workflow of the theme.
- Therefore it is beyond our scope of support.
This is a complex task and I’m sorry to inform you that there is no any temporary solution we can offer for you now.
It’s such pity that we’ve stopped the customization service.
Please contact a developer from community freelancer or https://wpable.net to customize the theme and implement this feature.
- Kindly note that we have no association with any 3rd party service so please consider carefully before making your decision.
Apologies for not being very helpful in this case.