I have encountered some problems with MiXplorer 6.56 on OmniROM 11-20210427-rpi-WEEKLY. When I attempt to access the external USB drive (which does aapear in the column on the left), I get "No item" with "Doesn't exist!" flashing briefly at the bottom. The included file manager opens it without any problem. Further, when I try to get into Internal storage / Android, the included file manager opens (with "USE THIS FOLDER" on the bottom of the screen). If I click fast, I can (sometimes) get into Android / Data, which again shows "No item" (the included file manager shows com.mixplorer in that folder, along with the other installed apps).