Others will be along with more knowledge on how to help you solve your problem.
The first thing you will be asked is for more information about your whole set up.
I can find the following information:
You have a BowflexBXT6 since Nov 2020
Your last run connection to Zwift was in Feb 2022. You mention not working for 3 weeks - was that the first time you tried to run on Zwift since Feb 2022?
You are still riding regularly on Zwift so you obviously have some hardware etc that is allowing a connection.
So please list what equipment you are using when you Zwift Ride
And
What equipment you are using with Zwift run - what equipment identifies your running speed/cadence and tries to pass it to Zwift?
If you are using different hardware (I use Laptop to ride and IPad Air2 to run) are both fully updated.
I have limited hardware knowledge but others will be able to help with more detailed information from you.
Edit. I found this forum thread. Please read through and see if it might apply to your situation.