Can't access Draw.io version 26.0.1 with Export to .VSDX (Beta)

[SandyJW]

Hello,
I've been converting my organisation's draw.io diagram to Visio diagrams using a link to Draw.io version 26.0.1 which includes the Export to .vsdx(Beta) option. I found a link to the old version in Github Issue "Disappearing VSDX export format #4942". https://26-0-16-dot-drawdotio.appspot.com/
I was using the .vsdx export last week but I can't access the option today. When I use the link today it opens V28.0.4 instead. Has there been a change? Is there any way to access the export option? We are a large organisation, and it would be a lot of work to recreate the diagrams that are left to convert.
I'd appreciate any help or clarification.
Thanks
Sandy

[JackTreble]

Best approach now is to install the last supported version locally https://github.com/jgraph/drawio-desktop/releases/tag/v26.0.16

[mattie47]

It's a reasonable alternative, however a lot of organizations don't let you install (or run the no-installer variant).

Ideally there'd still be an online hosted version if possible.