I'm confused about the use of "PGP-signed" vs. "encrypted" here. Why do you need to decrypt PGP-signed emails? I guess they were signed AND encrypted and the pr

I'm confused about the use of "PGP-signed" vs. "encrypted" here. Why do you need to decrypt PGP-signed emails? I guess they were signed AND encrypted and the problem was the encryption, not the signature. So presumably just PGP-signed cleartext should cause no problem for security reports. Or is that problematic too for some gmail-related reason?