Why won't my keyboard appear?

I’ve been using a Bluetooth keyboard lately, and for some reason, when I switch it off and try to use the device’s on-screen keyboard, it won’t show up. Does anyone know why this is?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0