Hello @UwUOwOVwV,
Welcome to the community forum and thanks for posting.
I am sorry to know that you're not getting an option of Pay in 4. Pay in 3 may not be available for certain merchants. We may also decide not to offer PayPal Pay in 3 as an option based on our internal checks. Unfortunately, we will not be able to make any changes to the transaction made on the account. Here's the help center article to know more information. If you need any help regarding the same, please reach out to our customer support through the available contact options.
I hope this helps.
Ayesha
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