PLCnext VPN

Hello,
I would like to ask you the following:
I want to distribute plcnext devices to my clients, and be able to connect to them remotely through VPN for debugging purposes.
The problem is of course that I cannot oblige my customers to have a static IP address or connect their network to a DDNS. I guess this is why I cannot use the openVPN application to achieve my goal.
Is there a way to achieve this maybe using the mGuard secure cloud? Does the controller necessarily need an mGuard router for this or not?
I understand that I will probably need the mGuard Secure VPN Client for my Laptop and the mG Secure Cloud Connector for every plcnext controller. But what is the difference between the following 2 apps? Which one do I need for my AXC F 2152 controller?
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Do you have any other suggestions or tips for this?

what is the difference between the following 2 apps? Which one do I need for my AXC F 2152 controller?Please read the information for those two apps in the PLCnext Store. In particular, the „SUPPORTED DEVICES“ section will answer this question. If you need more technical information about these apps, please use the „Contact Developer“ button on the app page.
My understanding is that mGuard Secure Cloud can probably satisfy your requirements in this case. For information about mGuard Secure Cloud, including the features and the hardware and software requirements, please contact your local Phoenix Contact sales office.