The Lionesses and Manchester United star has been left hurt as her shirt has not been put on sale for fans yet again.
Earps was told her kit was not sold last summer for England's Euros triumph due to manufacturing issues and that the issue would not happen again.
However, unlike the home and away jerseys, fans are still unable to get their hands on the goalkeeping attire for the Women's World Cup as reports say it is not part of Nike's commercial strategy.
Earps told The Guardian: "It is something I have been fighting behind closed doors.
"I have been trying to go through the correct channels as much as possible, which is why I have not spoken on it publicly - even though I have been asked a lot about it over the past few months - because I have been desperately trying to find a solution with the FA and with Nike.
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"Unfortunately, it has become very evident that is not possible and there is not going to be an acceptable solution for the young kids out there.
"On a personal level, it is hugely hurtful considering the last 12 months especially. There has been an incredible rise in goalkeeping participation."
She tweeted: "Mary's one of my favourite England players. I get it's not just Nike that do this, but how mad a decision not to produce & sell England GK shirts when that goalkeeper is Mary Earps.
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"And while she's the reigning FIFA Best GK. And a reigning European Champion. Find that v weird."
talkSPORT's chief football correspondent Alex Crook spoke on White and Jordan on how if this was Jordan Pickford for the men's team, the same scenario would not happen.
Ex-England youth star Courtney Sweetman-Kirk agreed, saying: "No there isn't.
"I think then what we're talking about now, going back to the bonus [performance-related bonuses dispute with the FA] and what people were talking about, again Lucy Bronze delved a lot more into that. It's not just about the money, it's not about the finance.
"It's about what the money stands for and everything else behind it. So, that fact you can't buy Earps' goalkeeper shirt, and there's lots of other things, the fact that the commercial window got cut short.
"These are all the things that the girls are fighting for on top of the bonus."
England women's record scorer Ellen White also revealed her confusion about the decision when she spoke to talkSPORT Breakfast.
"I've got absolutely no idea, it's a very strange one, it's very weird. Why wouldn't you want to create a goalkeeping kit?
"Because you've got budding goalies who would want that kit. It's a nice strip as well, it's not like it's a rubbish strip, it's nice!"
Earps discovered that she was omitted from images of the promotional launch for the new England kit in April.
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She even offered to pay for their production herself but the 30-year-old's shirt remains unavailable.
The goalkeeper is set to don her strip in between the sticks on Saturday morning as England kick off their World Cup campaign.