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@tomasduck said:
You could just go with CloudFlare.com to be used with your current host.
^
Cloudflare Free is great if you're on the smaller end of sites & it lets you add firewall rules through it's proxy system which may be more control than some web hosts will even give you
To be honest, I wasn't aware there was a CloudFlare Free? What's it missing that the paid version has?
I think OpenVPN can be customized for commercial use:
https://openvpn.net/community-downloads/
Rare that there is a happy ending but @JixHost was awarded his domain back by the court! He was successfully represented by the brilliant Attorney John Berryhill who specializes in domains and IP Law.
Take a look at https://processmate.net/customer-portal/ It is a platform for quoting and order management, which includes the customer portal capability for:
submitting and tracking quote requests
submitting and tracking orders
submitting and tracking service requests (e.g. questions, trouble tickets)
viewing and paying invoices
The portal can be branded (logo, colors) to your branding. The software has the console for your sales and service employees where they can do it on behalf of clients as well, in case if they call or email you. The platform is hosted in cloud, so it is a recurring fee license + installation costs, but it will be a fraction of the cost of the other tools mentioned here in the comments.