@Kevin_Z tried some card tricks, doesn't help. Works fine in a phone. Attached usage from my isp website (approx 3 gb used before plugin the Sim in router, was previously used for a smartwatch)

Follow up

@Kevin_Z hello, sorry for the wrong equipment. Reboot already done, no accurate update

Hello MR600/AC1200 not available as model type Unable to view real 4G data usage using router interface (Android + WEB), they are never updated. I've tried correcting intial usage via network / data...