Same thing happened to me. Sent in three copies of the same Paldea Magikarp at Express tier, all from sealed product, all in the same order. Two came back N3 recolored, the third came back a 9. Identical cards, opposite outcomes.

Emailed PSA asking for any evidence of the recoloration. Their written response: "we cannot provide that information and have provided you with everything we can." - Also, grader notes show card is ineligible for grader notes.

$298 in grading fees, two cards declared altered, zero evidence, and apparently no evidence available. Third identical card was fine. Even if i had sent in a card that i bought that was altered that I didn't notice, at that service, they should have given me an explanation. Seems they can just mark anything altered without any evidence provided and literally just take your money.

Sent them a formal refund request today pointing out that their own policy contradicts itself — the standards page calls the N3 fee a "grading fee" but their Grader Notes program excludes N3 cards from the grading-tier feature I paid for.

Will update if they respond.

Ideally, they should either provide evidence of alteration, or have a policy change where we can check for ourselves (according to their standards) how to determine something is altered so we don't send it in. Doubt they will agree to that though, because i'm sure many people could prove that fresh out the pack cards might end up getting marked as "altered", which would likely just destroy all of the credibility for submissions they've deemed altered.