Anki's algoritm

Every time I re open app, flashcard algoritm I’ve setted for myself changes to default.
How could you save your preset? (I created both new one + I made anki intervals changes in default one, but it always switches to general algoritm).
Do I need to go to the settings every time and change algoritm before I start practising?

It should be maintained on restarts. Please report any bugs using the “Report Bugs” button accessible from the ? button in the lower right of the app.