"This player doesn't meet the requirements to join your current game mode"

Unfortunately I can't find information to help you better I suggest you contact EA support which is the game's manufacturer only they will be able to give you an answer about this type of problem.

https://help.ea.com/help-top-issues/?product=fifa-23

We've already done that but still we can't play, but I can't invite him. When I try to invite him, it says that the player doesn't meet the requirements to join my current game mode. We checked everything you said but still we can't play

No problem. Thank you so much, I will contact EA to solve the problem.

Greetings!

Hello Carlos.
My name is Ezequiel. I'm an Independent Consultant and I'm happy to help you today. Crossplay should be enabled by default, but players can confirm that it is enabled by pressing the R2/RT button in the main menu to bring up the Social tab.

From here, they must click on the Options/Start button to enter “Social Settings” and navigate to the Matchmaking Options menu by selecting the “Crossplay Settings” option which can be found under the “Crossplay” tab.

If, for whatever reason, "Cross-play enabled" is set to no, they simply need to change it back to yes.

Assuming crossplay is enabled, players will automatically be matched with people on other eligible platforms when playing competitive FUT matches and online seasons.

To play with a friend, however, there are a few more steps they need to take. First, they will need to add their friend from the Social menu, which can be done using their EA ID.

To do this, players must navigate to the "Player Search" tab and enter their friend's ID in the box. If they don't know, your friend can check your EA ID by going to the same menu and taking a look at the box on the right. Once two players have become friends, one will need to invite the other via the Online Friendlies menu or the "Ways to Play" screen that appears when setting up a Friendlies match in FIFA Ultimate Team mode.

In the case of the latter, just select the option “Play with a friend” and choose your friend from a list of online friends to send an invitation.

If the person receiving the invitation is busy when it arrives, they can find it in the "Game Invitations" tab of the Social menu later. If not, they can accept it right there to get the ball rolling.

https://www.ea.com/news/pitch-notes-fifa-23-cross-play-deep-dive

I'm very happy that you understand and I'm sure EA will solve your problem and you will be able to play with your friend, have a good night.