Tray TOTP has been the standard for KeePass2 TOTP support, Keepass2Android refers to Tray TOTP for it's TOTP compatibility. It appears that TrayTOTP hasn't been updated or even worked on since 2013. There are forked versions of TrayTOTP on github, but they also haven't been updated in at least 3 years.
New version of KeePass, Tray TOTP incompatible