Announcing the expansion via its official website on Wednesday, FIFA said, "The FIFA Council has unanimously agreed to a proposal to expand the number of teams taking part in the women's World Cup from 24 to 32.
"Having compared with the vote sheets submitted by the federation and the ones we have published on FIFA.com, we confirm that we have the right votes signed by the player.
The adjudicatory chamber of FIFA's independent Ethics Committee said it had imposed the ban on Alvarado with immediate effect. He was a former FIFA standing committee member.
Chelsea previously said they "categorically refute the findings of the FIFA Disciplinary Committee", and would be appealing the ban on registering new players for two transfer windows, which FIFA imposed for breaching rules to protect teenage
FIFA has now said it would try to find a solution with the three countries - Sweden, Poland and the Czech Republic - involved in the World Cup qualifiers. "(FIFA) has already engaged in dialogue with all of these football associations.
"This large-scale investigation was conducted by FIFA over several years through its integrity department and in cooperation with the relevant stakeholders and authorities," a FIFA statement read.