As turingtest2 pointed out earlier in this thread, this is a user to user support forum. Anyone wanting Apple to know need to contact them direct, either by making an appointment at an Apple Store or via the contact support link at the top of these pages.
It's a software problem, not a hardware one. For the majority of users it began with the iTunes update in early April although on some of the many threads on this matter, some have indicated they had problems prior to that update.
In my case I used a work round featured in another thread on this site (I'll link that one) and since I did that on 6 April my photos and albums have synchronised correctly, but slowly.
Those who have a lot of photos on their devices will find the synch takes a long time, I'm not sure it is stuck or frozen, just takes quite a while if you are adding photos to the device.
The other thread is full of useful information and is here can not sync photos with ios 11.3 and itunes 12.7.4
The method I used was (words and suggestion by user ErgoEdbo:
Step 1: Go to your target photo folder (which includes all of its sub folders, and DELETE the iPod Photo Cache folder.
Step 2. Perform a sync on your device, but UNCHECK the “Sync Photos” box, when prompted, select “remove all photos from device” (this action will erase everything from your device). Complete the sync.
Step 3: After disconnecting USB from PC, perform a “hard reboot” of phone or pad & restart the device.
Step 4: Begin a new sync, this time, CHECKING the box to “Sync Photos” (this action will result in recopying ALL of your target folders & photos, and can take some time to complete, as it would if you were setting up a brand new device)
Step 5: After all photos and appropriate folders have been recopied during the sync, everything should be just fine & complete as it was before the combination of iOS 11.3 & iTunes 12.7.4 CAUSED this irritating problem!
I have four devices all successfully synching each time, all manually managed - iphone 7plus, iPhone 6 plus, ipod touch and ipad pro.
I have almost 3,000 photos in albums on the iPhone 7plus, I estimate a synch on that takes about 15 minutes start to finish, most of which is spent on the 'reading photos from pictures' step.
ErgoEdbo has just re-visited the thread I linked repeating the above.