App loading screen - External Collections, Custom Actions

Hi couple of questions I would love assistance with! When loading my Adalo-app it shows a loading icon, then a different loading icon, which I find confusing and wouldn’t want my users to experience this??(see pictures) also, can I remove the loading-icons all together and replace them with a custom picture/icon?

App loading screen - External Collections, Custom Actions & Collections - Adalo

App loading screen - External Collections, Custom Actions & Collections - Adalo

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