Can't delete old addons

Used to be able to delete addons that I would import from Mcpedl and the Market place. When trying to delete addons in the past i would go to storage then multiselect scroll very slighty with the small space i had and go to RP/BP and delete the addons. Now when I go to storage and hit multiselect nothing pop up, RP/BP are supposed to pop up and they should have there own tabs but nothing there and i cant scroll on storge. I've tried on my phone and on my tablet but the something happens. It's very difficult to have an addon that has updated and not be able to delete the older versions.