Today evening 2023-01-17 I got error message from My KPN mobile app that a maintenance work was performed. After that I got internet traffic blocked after Ookla Speedtest. I'm using SIM card with unlimited data. Every time when I start to do fast download, I get blocked after 10-11 seconds. To restore internet I then need to switch SIM off and on to initiate reconnect to the mobile station.
During Speedtest I can finish only Download part, which results in 120-134 Mbps. Upload part always results in connection error.
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It didn't happen with Lebara SIM card. And KPN SIM card worked flawlessly for 30+ days before today evening.
I expect that it's a kind of firewall rules with blacklist triggered or something similar, but don't understand why? My traffic limit is not reached and data flow should not be blocked only because I start Netflix download.
Does anyone know how to solve this problem?
Thank you in advance!
Vladimir