API not accessible from mobile phone with mobile data

[sicotaco]

Hello,

first of all: I love your work!

Unfortunately, for a few days I can no longer use a function based on the API on my Android devices.

For this I use the following link to the API, here as an example:

https://v6.db.transport.rest/stops/8000044/departures?when=2023-08-20T18%3A29&duration=60&bus=false&tram=false&ferry=false&taxi=false&subway=false

I can open this page via Android in the WLAN, but not via mobile data. iOS users can also load the page via mobile data. In my case, the page does not load, followed later by the error message "ERR_TIMED_OUT".

Is it me or is there an error? This page has also worked wonderfully via Android and mobile data before.

Thanks for help!