Due to the nature of the Server Error 5003 I have finally figured out the actual developer is Firemonkeys a EA Studio. They have no support options whatsoever on their web page for NFS Most Wanted. All complaints here on this page is not helping. Google Play needs to hear from you and everyone must call Google Play and request it to be removed before more people are ripped off.
If you want to try to attempt to contact Firemonkey's support the page is https://help.firemonkeys.com.au/hc/en-us/requests/new
Once you get down to the box that says "What game do you need help with?" clicking on the box the options are only for NFS No Limits, Real Racing 3, and Sims Free Play. Not even a hint of NFS Most Wanted anywhere. Not even listed here https://www.ea.com/studios/firemonkeys/games
The game's loading screen with red Firemonkey's emblem is same as the emblem on the website to be exact.
There is no help other than requesting a refund from Google Play and demanding it to be removed from Google Play Store. At this time it's only ripping people off.
I have been working on this for over a week and this is the best solution. I am sorry. I am only a race gamer wanting to help other race gamers.