Upgraded to Fiber 1.5 Gig but speed still at 1 gig

[wireless]

Hello All,
been a happy customer using the 1 gig speed (93x/93x) download/Upload.
two days ago i did accept an offer to upgrade to 1.5 gig , account now tagged with 1.5 gig connection.
was told it will take 30 minutes to see the higher speed .
Connection : Nokia ONT to WiFi6 router via 5 gig WAN port. speed " ONT to internet " still at 1 gig level per above.
same as Router to Internet .
power cycled modem and reset router as well . latest router firmware in use for a while with no issues .
any ideas , help would be appreciated.


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