need to fix react native bugs and make a few changes (read description first)

- fix levels clickable
- fix register issue
- put continue button in choose your level screen.
- put text under screens icons (home – learn – academy – library – profile)
- change flags icons for country and languages and add change language to setting
- put monthly price instead of annual price in purchase screen.
- fix audio bug.
Budget: 100$ max
Timeline: 1 day