If you are playing in a "partial support" language (such as Spanish, Italian, or German), there may be bugs like this. These languages were imported from the European PS2 release and were not originally present in the mobile version whatsoever.
(Japanese, Chinese, French, or English all have complete support)
The game detects your language via your phone's default setting. You can
switch to English by either changing the system language in Android settings (out of game) or by pressing the Sound Effects (-) button several times in the main menu Settings screen in-game.
By changing the in-game language, you will most likely find all of these issues fixed.
Please direct any further support requests to the contact links provided at:
https://sites.google.com/view/dq8mr