DME went out of business

Today's mail had a letter from my Medicare Advantage Plan stating that Univita (oxygen supplier) is no longer in the network, effective immediately, as Univita has gone out of business.

Univita seems to have violated Medicare's oxygen regulations, based on this COPDF link:

https://www.copdfoundation.org/What-is-COPD/Living-...

I am in the last 6 months of the 5-year contract and just recently - within the last month - received a brand new stationary concentrator and a new POC from Univita as both of mine were not working well. I expected to begin to make co-pays again in February 2016 when a new contract period started.

I am assuming that I am to keep the units until a new DME is contracted with my insurance plan, but am wondering whether there's anything else I should be aware of?

Thanks for any advice or similar experiences.