After updating to iPadOS, my file type associations are all gone. For example, if I e-mail myself an Excel file, the share sheet does not offer Excel as an option. Instead, I get a few generic choices such as Airdrop, Messages, Mail. Tried the “More” button but no luck. Tried the same with GPX and KMZ files, but no longer see my GPS program or Google Earth as choices. Any way to fix this? My iPad Pro 12.9 (2017 model) is barely usable since the update.