First of all, if you are paying your realtor a commission after your home sells, WHY are you doing your realtor's job for them? That is why you are paying a commission. I'm a retired realtor and it irks me when sellers are assisting their realtors for free and paying them a salary too. PLEASE give me a break. As a seller, your job is to relax and let your realtor do their job. Now for some pointers (which your agent failed to tell you):
When you signed the listing contract, your realtor is in charge of marketing, etc. Therefore any issues with syncing, uploading or updating pictures of your home to a website should be handled by your realtor. A seller should not have to ask the question here. Your realtor has colleagues (co workers) who pay monthly advertising fees to Zillow or Trulia to be "Premier Agents." I paid so I was a Premier Agent. Premier Agents have representatives at Zillow and Trulia with direct phone numbers. Your realtor can easily ask for a favor and have one of her co workers call their rep and have the listing corrected on Trulia in about 5 minutes. Your realtor may have to return the favor but so what? Your listing is fixed.
I'm sure your agent knows somebody in his/her office or a nearby office where an agent is paying for "Premier" status. If your agent refuses to call that Premier Agent, to me that spells "laziness." By the way, if you look at any of the listings on Zillow or Trulia, all the pretty faces of agents are "Premier Agents." Also Zillow and Trulia are the same company. They merged about 2 years ago.
If I were you, I would be asking for a reduced rate in your agent's commission.