Help on MS365 Business Std license issue

The two screens show different things: Your products lists individual subscriptions, while Licenses can combine quantities from subscriptions with the same product name. Therefore, seeing two Business Standard subscriptions and one assigned license does not establish that your user is attached to the wrong purchase.
Check the new subscription itself under Your products: confirm its status, quantity, and next renewal or expiry date. Then confirm your user still has Business Standard selected under Licenses and apps, with the required services enabled. The critical long-term check is that the active subscription supplies enough licenses for all assigned users.
An expired subscription's lifecycle depends on how it was purchased, so I cannot promise when that row will disappear. Keep the support case and redemption confirmation, and ask support to confirm the active entitlement in writing. Avoid repeatedly unassigning the working license merely to make the displayed total look different.