TrueCaller not working because Calling Blocking can't be set
I have an iPhone 6 Plus on 10.3.3. I've been using TrueCaller for a little while but recently noticed that spam calls are getting through, when they didn't use to. I checked TrueCaller and it says Spam Protection is disabled and to go to Call Blocking & Identification to turn on Truecaller.
I go to Settings>Phone>Call Blocking & Identification, but when I tap on Call Blocking & Identification, it freezes and doesn't go anywhere. I've left it there numerous times for several minutes and eventually have to close Settings. Because of this, TrueCaller doesn't work and I can't go into the Call Blocking settings.
I've searched the forums and see a lot of people have this issues on iPhone 5's, 6's & 7's. Apple's response has been to reset the phone, which I've done, but just like the other posters, it didn't fix the issue. I see from the posts this issue has been going on for awhile. Does anyone know if there is a fix issued for this bug?
ETA: I uninstalled TrueCaller and restarted the iPhone, but I was still unable to get into Call Blocking & Identification under Settings..
iPhone 6 Plus, iOS 10.3.3, null