Riviera Resources not paying

Has anyone that has mineral rights in the Hugoton Basin (or kansas) stopped receiving payments from Riviera?

I read that they sold the Hugoton Basin last year and we received no notifications or transfer orders from any other company. They have been paying out millions to shareholders but nothing to us for 6 months.

Per search, buyer is Scout Energy Group V LP. See article below. Contact for Scout Energy Partners is https://www.scoutep.com/contact