Not receiving verification codes

This article from Apple Support may, or may not, help in your situation

If you didn’t receive your verification or reset e-mail

https://support.apple.com/en-au/HT201455

JaneshkaCatherine Said:

"Not receiving verification codes: Hi, I’m trying to sign up for an app and they need to send me a code but I’m not getting their texts. Help"

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Any Filters?:

If you have filters of sorts, then disable them for the time being, seeing if they go through.