How to set up data usage warning on both sim cards

Hi!

My Op3 is only allowing me to set a data limit warning for one of the sim cards..

For Sim 2, it show the chart and "Set cellular data limit" option and, on the chart, the two line bars to set up the warning and maximum limit.

For Sim 1, it only show the chart, but no "Set cellular data limit" option and no line bars to set the up the warning and maximum limit.

Weirdly, for SIM 1 it show the date interval, which it doesn't for Sim 2..

Also.. where can I change the date interval?? It is assuming a wrong interval...

Thanks!

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