I have 2 macbooks with El Capitan. Due to their age no upgrade of the OS is possible.
Now VyprVPN dropped support for EL Capitan thus no bugfixes will be available.
Recently the VyprVPN app stopped working (no connection can get established), so I went through the support pages and noticed the indication of a manual VPN setup with IKEv2 support.
Now fact is that IKEv2 support on these OSs is buggy, every 8 minutes OSX wants to rekey, and the connection breaks.
This issue with IKEv2 is well documented, just google "os x ikev2 failed 8 minutes"

So after contacting support they gave me the hint of checking with openVPN, which actually solves the problem (off course first installing tunnelblick), but I noticed that on the support pages, under Mac there are so many options, and the tunnelblick reference (for a non VPN expert) was confusing.
I only clicked on tunnelblick and OpenVPn because support told me to check openVPN

So actually under EL Capitan, at least for me, tunnelblick and openVPN seems to be the only solution available!But the way of finding this solution was far too complicated and non-intuitive

Requests:
1) For OSX 10.11 and lower remove the IKEv2 hint on support pages, it is misleading and doesn't work in the end. Users might be discouraged when trying that (like me)
2) Instead of the IKEv2 recommendation, the support pages should offer Tunnelblick and OpenVPN more prominently for El Capitan users, perhaps a refrasing would be also smart, mention openVPN before Tunnelblick....
3) the different Mac Options could be reorganized for better intuition, specially offering for 10.11 only the OpenVPN solution (with tunnelblick), I would rewrite the order on this point: first protocol, then the app to be used.

I think it's not a shame to offer the Tunnelblick OpenVPN much more prominent as a fallback solution for older MacOS
It's a bigger shame to have it so hidden that unexperienced users frutratedly stop using your VPN...

It is also recommended to indicate that the main service ooffered is VPN itself, not necessarily the App, at least for older OSs it's completely understandable

It seems that in Windows as well as browsers present data leaks despite the fact of using a VPN.

Some specialized sites suggest that you need to "correct" certain values in the browser and change certain values in the Windows registry.

Are you informed about this?

Why not, integrate in your future updates is corrective?

Why am I saying this?
Explanation:

What is an IP address leak ?
IP leakage occurs when your VPN fails to mask your real IP address with one of its own, making it accessible to all prying eyes to see. In other words, the VPN is in operation but in such a case is useless.
This is a huge problem that puts your privacy at risk. Once your ISP or other curious third party is able to see your real IP address, they are able to link everything you do online to you as a person.

What is a DNS leak ?
When DNS requests flow outside the encrypted VPN tunnel and are processed by your ISP (so instead of your VPN), this is called a DNS leak.
DNS leaks expose your browsing habits to your ISP or any spy on your way, allowing them to track the websites you visit and the apps you use. In some countries, such as the United States, ISPs can even sell and share this information with advertising agencies or authorities.

What is a WebRTC leak ?
WebRTC leaks are vulnerabilities in web browsers, such as Google Chrome and Firefox, which reveal your real IP address.
These leaks are not really faults in the browser, they are part of their design. Efficient IP sharing is supposed to be convenient and fast, which is why WebRTC uses smart techniques to determine your real IP address and bypass firewalls that might otherwise prevent your real-time connection from happening.
However, using a VPN poses a huge threat to online privacy, as your ISP - or any other nosy third party - will have access to your personal data and online activities.

What is an IPv6 leak ?
Although IPv6 is the future, it is not currently supported by all VPN providers, which makes them vulnerable to leaks. Many VPNs only route IPv4 traffic through the encrypted VPN tunnel, leaving IPv6 traffic unprotected.
IPv6 leaks cause both IP and DNS leaks, which means that your personal information and online activities may be visible to your ISP or other third parties.

That's why a fix at these levels, would protect us from this. For all the people using your application, unfortunately, and without knowing it, it's very likely that apart from your application, these problems raised by companies in computer security, pose problems.

David