got it finally, an for anyone else i did the steps: installed bluestacks 4, installed google play version, klab linked, deleted google play bleach, installed mod, installed link apk, linked, clicked mod apk to overwrite the link apk, loaded bluestacks, clicked my apps, andriod settings, under device clicked apps, bleach, under permissions added the 3, under draw over apps moved it to yes. an now it works.
seems mine wants the 3 permissions rather than just the 1 oddly enough, an to confirm it works, when the klab logo shows, mod creator also shows if everything is working correctly (gah this would have saved me having to load stuff delete stuff an reinstal for 5 days straight)
in any case many thanks, this will put a load off epic raids