Heroku not stable

i have deployed my bot to heroku but if i left it or logged out the informations are not available the bot infos are deleted and it shows to sign up again there is some problem with the postgres please reply… solutions…

Did you change database to Postgresql.

i have changed it to postgres i tried with both cli and in dashboard but i didn’t work sometimes after logging out the botpress asking me to sign in again and again can you tell me what to do and im using hobby dev plan in heroku postgres