Not all of the pictures sent to clients show up on my profile?

It is very possible that 50 is the maximum number Rover can show. Take a look at other sitters, especially ones with lots of customers and reviews to see if anybody has more than 50 canine clients displayed. I did a very quick look around and 50 was the highest number I came across.

If you want to show lots of different clients, then you are going to need to be selective about how many go to your Canine Client gallery. You will need to "hide" some to make room for others. However, it would be nice if someone from Rover technical support could explain how it works and if there are limits.

You can control which pictures to make public under Canine Clients by either turning the feature on/off completely under Settings>General, or case-by-case when you send each photo from the Rover app - there is a toggle switch at the top that says "Make Photos Public".

However owners also have the option to make their pets' photos public or not. I assume this is something they can do under their settings, so that no matter what you select, their photos won't show up on your Canine Clients or under their pet's profile. I would guess this is what is happening to some of your photos.

I also believe that photos sent through Rover Cards are not saved under your Canine Clients section. Only photos that are sent through the messaging system are uploaded there (but someone correct me if I'm wrong!)