FC 25 FUTURE STARS EVO PLAYSTYLES

Same issue

me too, I choose anticipate playstyle but it shows another playstyle 

MILANOOO_13 - You did not select the Anticipate playstyle, you selected the Quick Step playstyle. Please see the image below from your video. I have highlighted with a red arrow. Hope this will help you.

My problem is instead of it showing up as "Quick Step+" or "Anticipate+" it shows up as "AcademySlot83d", "AcademySlot84d", "AcademySlot85d", for example. 

Usually restarting the game, sort these naming placeholder issue. If proper naming was not shown for you then you should have waited for some time. I am not sure what you can do now. 

"Companion App, the app didn't wan't to launch, because it said it was already logged in a different device." - This means you didn't logged out properly. When switching from game to app or vice versa, always wait for few mins.

This issue has always been in my game since I installed it, I've tried to reinstall it but it never worked. I've even tried to repair the game multiple times and still appeared as "AcademySlot..."

Can't EA like give me the pick back, can't I send an email to them? And if I can do that, how or where do I ask them?

Hopefully this doesn't get swept under the rug, EA Live Chat are insistent that this will be fixed and remedied (even if you've applied the playstyle+ apparently according to EA Chat) if not Microsoft said they're willing to refund my game because after all the issues since launch this is the final straw for me.

It could be issue with platform where you are playing the game like cache, connection etc. I am not sure on this. 
If you want to get in touch with EA help then this the link - https://help.ea.com/en/help/faq/using-ea-help/

Happened the same thing, couldn't use the companion app, plus my luck is one of the worst, I watched a video (to see what card to pick) and tried to get the Incisive Pass + and of course It wasn't in the same spot, so I got Antecipate+. I hope they send at least the Playstile+ pick again. I won't apply it in hope they fix.

same for me, picking the future stars academy play style + I thought I was picking tiki taka but ended up with trivela. Won’t apply it as I hope they let us pick again!