If you read a few recent app-lounge threads, there seems a bit more you can do than just clear storage … unless your build is not up to date. Please give your version as [HOWTO] Give complete /e/OS version info easily for support, answers, comparison etc.
Some app-lounge threads have update in the title and concentrate on that.
Two or more issues here: [Solved] Updates not showing - #4 by aibd