@noelmm
Sorry, I'm not clear about your description, could you provide some screenshots for reference?

@emcmahon-skokie68-org
Hi Erika,
Since the Amazon Prime video content is protected, it can't be viewed through screen mirroring and is currently only available through apps.

@stéphanelf
Hi Stéphane,
Thanks for your info, we'll verify again for the "presentation mode".

@stéphanelf
We've tried replicating the issue you mentioned, but still can't replicate the symptoms. Can you please try to verify this issue through the mobile hotspot connection to ensure that the network is ok?

@alawil78
The two models are only different the panel.

I think the firmware version is too old, please download the latest firmware then try again.
https://www.viewsonicglobal.com/public/products_download/software/ifp/ifp50/IFP7550-2_20210317_161352.zip