Not all types of DVDs, DVD-Rs, Blu-Rays or BD-Rs play in all players. This may be because the player you tried to play it in:
1. Is unable to play all types of DVD-R or BD-R recordable media
2. May need a firmware upgrade or
3. For a technical reason which may involve memory or format compatibility, the player is just plain incompatible with the disk, like two people on a blind date who do not like each other, simply do not get along.
What do you do about this?
1. You can get a Blu-Ray player such as the Sony BDP-1200 or BDP-s3100 which we know to be compatible with ALL Squadron DVDs and Blu-Rays
2. You can try updating the firmware on your Blu-Ray or DVD player. If you bought it in 2011 and it's 8 years old it may not have the built-in capacity to play BD-Rs until you update it. Go to the website of the manufacturer of the Blu-Ray player and search the site on the term "firmware" or simply search on Google or another search engine on the model number of your player and the phrase "update firmware" and follow the instructions on the page you arrive at on how to update your machine and make it more compatible with different kinds of media.
3. Order the DVD version of the Blu-Ray title instead, which will likely play in the player in which you want it to play.