I know your issue. Try rename the pk3 file to bdv20bjrmyxdarsenal.pk3 Yes, you need to put them together to make it work.Because if the pk3 file has spaces between its file name it will always show normal DooM. Hope it worked for you.
Tested it with GZDoom Build 2.1pre on Doom touch. Works like a charm.
Ultraremi
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I'm just a typical Android doom gamer. Don't mind me.