Unsupported Browser

Hi I’m using Screenly OSE for my personal use which is installed in Raspberry Pi 3 Model B+, almost an year ago. Its working fine with Google Slides and I tried for a web site which contains slides created using Microsoft PowerPoint (office 365). Those slides are not rendered with the version I’m using and gives this error.

Can someone kindly confirm whether the screenly latest build has a latest browser to render Microsoft Powerpoint presentation created using office 365?