The Things Network V2 will have planned downtime: a brownout. This is for users to ensure that they no longer rely on the deprecated The Things Network V2 service as it is being permanently shut down from December 1st, 2021.
If you experience data loss, you might have missed migrating some end devices to the new The Things Stack Community Edition. If you do not experience any data loss during this brownout window, congratulations, you have migrated your end devices correctly.
Should you rely on traffic from end devices during these brownouts, you can still access the data streams on alternative ports. Please see https://status.thethings.network/incidents/zb5mj6jl563c
for more information.