Conflict with Qubely Plugin

Hello,

I have discovered an apparent conflict between the free version of Download Manager and the “Qubley Blocks” plugin developed by Themeum, website

https://www.themeum.com/product/qubely/

When I have both the download manager and Qubley Blocks, my site crashes hard. Have you been previously been made aware of this? The issue occurred this morning during a routine plugin update. Did you download manager have any recent updates?

Thank You,
Ron Charest