Enpass appends the one time code to the password when autofilling the login page of etrade.com. This may have been a necessity earlier (i.e. absence of a separate field for the one time code on the login page), but it is no longer the case. The etrade.com login page currently has a separate input field for the one time code.
macOS Sequoia + Safari 18 allows installed extensions to be enabled in WebApps created via Safari's Add to Dock feature. This would be quite useful for the Enpass Safari extension. Currently, the Enpass Safari extension doesn't appear in the list of available extensions in a WebApp created via Safari's Add to Dock feature. One extension which does seem to work is called Userscripts - an open-source extension distributed via the Mac App Store. Please see attached screenshot for reference.