The same thing happened to me when I started using AntennaPod last month! My phone tries to maximize battery life by restricting which apps can run in the background, which kept feeds from refreshing feeds until the app was opened. Perhaps your phone does this too. For me the setting is “Apps & Notifications > special app access > battery optimization > AntennaPod → unoptimized” and “App blocker > AntennaPod> no restrictions”. Try searching your settings for battery restrictions or optimizations, or these suggestions for an infinix phone: https://audiomack.zendesk.com/hc/en-us/articles/360054835431-Infinix-phones-experiencing-music-or-app-stopping