E-mail notifications not getting sent

I'm hoping someone can help me resolve why my users aren't receiving the notifications when a relationship is established. I've confirmed that its not a user error or going to the spam folder etc. Here is my setup:

Modules used: UR-API, UR-UI, UR-Mailer
Type: One way relationship, no approval necessary, not restricted by role.
Settings: Users can turn off messages, but this is happening for those with notifications box checked. Send pre-approved messages box is also checked with a message in the body.

Now I've customized the interface a little bit, and I'm guessing its in doing this that I've somehow messed up the UR-Mailer functionality. Here goes:
String overrides: I've changed the text that appears in the profile settings to reflect the specific type of relationship I've created for my site. I can't see that this would mess it up, but you never know. Ex: Relationship email settings is overridden to Favorite Family Notification Settings.
hook_menu: I've changed it up a bit in a custom module:

// Alter Relationships tabs and titles
	$items['relationships']['title'] = t('My favorites');	
	$items['relationships/list']['type'] = MENU_CALLBACK;
	$items['relationships/requests']['type'] = MENU_CALLBACK;

The reason I've hidden these links is because to add a relationship, the user clicks a button I've created on the profile page. Here is the code for that:

<p><form action="/relationship/<?php print($account->uid) ?>/request/<?php print($user->uid) ?>?destination=user%2F<?php print($account->uid) ?>"  accept-charset="UTF-8" method="post" id="user-relationships-ui-request" class="confirmation">
					<input type="hidden" name="rtid" id="edit-rtid" value="1"  />
					<input type="hidden" name="elaboration" id="edit-elaboration" value="New favorite" />
					<input type="hidden" name="user_relationships_request_confirm" id="edit-user-relationships-request-confirm" value="1"  />
					<center><span class="favoritebtn"><input name="submit" type="submit" id="edit-submit" value="" class="form-submit" /></span></center></form></p>

After clicking the request button, they're taken to the confirmation page. "Are you sure you want to become username's relationship?

My best guess is that by hacking the request relationship link I've inadvertently bypassed whatever calls the mailer. I need my users to be able to see when someone has added them as a favorite. Any ideas out there?

Thanks in advance!
- Ryan