It seems that you need a "regular" messenger app (Whatsapp, FB, Snapchat, FB messenger…) installed in order to have a dual account.
Now that I uninstalled Whatsapp I don't have a "95" dual account anymore…
You can force "dual messenger" installation, but note that app permissions won't work so you won't be able to share pictures:
- Enable developer mode on your phone (Setting > About Phone, then click 7 times on Build number, then Setting > Developer, ...