Hi again,
Regarding the new issues that @vbdeco mentioned:
1) I can reproduce this error. When someone clicks the “Subscribe without commenting” link, they are brought to the correct page (content from the “Request Link” field in the Management Page tab). Once the email address has been submitted, the content from the Management Message field of the Notifications tab is displayed. In the current repository version of the plugin, version 160115, the correct message was displayed (content of the Request Submitted field on the Management Page tab).
2) I can only reproduce this error when a user subscribes while commenting. NB: There should be a field to edit this message on the Management Page tab…
However, note that for me, when a user subscribes without commenting, they receive the wrong email message entirely. The “Double check message” from the Notifications tab is not sent. Instead, the “Management message” (same tab) is sent. And as described in this Github thread, both the manager_link and oneclick_link tags generate the Request Link field content from the Management tab instead of the personalized management page or the content of the One-click Unsubscribe field from the Notifications tab, respectively. This means that users are sent on a perpetual loop, and can never confirm their subscription.
I believe this is due to the fact that when a user subscribes without commenting, they are no longer added to the Manage subscribers tab. The plugin can’t send out a confirmation / Double-check message if there’s no new subscription to confirm in the first place…
3) Ditto ?? However, conversely to #2 above, the manger_link tag does work, though the oneclick_link tag doesn’t — both display the personalized management page.
Since the current repository version works much better, I will revert to that version, but I’ll try to see if I can help troubleshoot a little more… Note that all my testing has been done in logged-out state.