Flow cards and names disappearing in Homey Web App

Questions & Help
1

It regularly happens that when I am working on an advanced flow on my PC via the Homey web interface, or when I activate the Homey window, almost all cards show the text “Card not available” (see attachments). When I press F5 (or sometimes automatically), all cards and sometimes even all flow names in the left panel suddenly disappear. The problem occurs in both Chrome and Edge, and also in incognito mode. This issue does not appear in other functions, only in flows. When I close and restart Homey, the problem temporarily disappears. Usually, I need to wait for the flow function to fully load the initial screen before I can use it.

Homey’s performance is fine.
I reported the issue to Athom on October 6th, but they have not been able to identify the cause yet.
Does anyone have an idea how to solve this?

2 Opeens een leeg scherm
2 Opeens een leeg scherm3834×2079 216 KB

1 Kaart niet beschikbaar
1 Kaart niet beschikbaar1920×1045 198 KB

2

I’ve reported the same issues @ Slack (not to support) with both my Pro 2019’s

Screenshot_20251115_180207_Slack
Screenshot_20251115_180207_Slack1080×2119 186 KB

It seemed to be DNS related, but I still have to wait to edit, after opening a flow, until it completely disappears and appears again after several seconds.

3

same Isseu cards not avaiable

Cards
Cards1539×959 139 KB

4

There seems to be a long standing flaw in Athoms implementation for flows in the web app.
Try defining an exception for homeylocal.com in DNS rebind protection in your router.

That will make your browser ask you for permission when you load the web ui for the first time after having started the browser. But at least for me that almost solved the problem and it made the web ui lighning fast as a nice side effect.