Description:
The FlowCrypt android app version 1.6.3 cannot recognize encrypted message in an attachment with name msg.asc together with the noname file. In comparison, FlowCrypt iOS as well as the FlowCrypt browser extension is able to recognize and decrypt email in such structure.
Opening the email will reveal blank screen:

I’ve asked their friends if they could send us another email encrypted with https://flowcrypt.com/pub/human@flowcrypt.com, but unfortunately, they’re not ready to do so. Instead, they shared an email they received, which I will forward to our Android developer.
This is all the information we have at the moment. If there's anything else we might need, please let me know.
Reference: https://mail.google.com/mail/u/human@flowcrypt.com/#inbox/FMfcgzGxSbnTBgBpkXCmjwNjDWBmsLKg