Hi. I've been an OVH customer for some years now; apparently, not as long as you, but every year counts.
I cannot tell the actual reasons why OVH discontinued the old Managerv3, but I can guess them. I see two possible reasons:
- First, when you have a piece of software for many years, in a constant company growth, it often happens that it turns difficult (and more difficult as time passes) to keep that software adequate to all the company needs. That can be even more difficult if the software wan't made thinking on the future; even when it's a bad practice, it happens more often that it should. The Managerv3 was made many years ago, and I bet the people who wrote it at the beginning never though about thw growth OVH would have in the future: many DCs, a lot new services types, etc. It just probably became difficult to keep the Managerv3 updated to fulfil each new requirement. And, when that happens, it's better to rewrite the software, with good practices, and thinking on the future.
- The second is, Managerv3 was written on times where you only had HTML and a little javascript. Client-side HTML was almost static. Things have changed now; everything is dynamic on client side, and that allows to make a more intuitive and easy to use UI. Of course, that would have been impossible in the old Managerv3. The new Managerv6 takes advantage of new technologies modern browsers can offer, making everything faster and easier for customers.
About your problem using the Manager from your phone.... It's really weird. I say that because I've used it many times from my phone without any problem(my phone is Android w/Chrome). But I think there are two possibilities:
- One or two nights ago, OVH has made an update on the Manager. Maybe, while they were updating it, there were some issues with it's usage. If this is it, trying now should work with no problem.
- Chrome should work, but it's always good to try other browsers. I'd recommend you to install Opera & Firefox, and, when things doesn't work with Chrome, try with both of them. BTW, configuring them to behave like their desktop versions could give you better results in cases like this.
There used to be an OVH mobile app around there, but it was taken down by OVH some time ago. The reason was the app used the old SOAP API, which OVH is in process of discontinuing, in favour of the new REST API. But you are right, they should have an app, I consider that a must-have on current times, specially for a company like OVH.
What you can use from your mobile phone with no problem is the API Console, where you have the same operations as the Manager, but in a more technical way. Take a look at it:
https://api.ovh.com/console/