NEWS

2026/4/23：New Free Offer for “Death Numbers”: If you have submitted any test from the Cogni series, you can submit one test for “Death Numbers” for free.。

 

2025/2/23: "Tests by Mahir" page updated, instructions and submission fees for each test updated.

 

2025/2/18: Personal PAYPAL account changed to 「mahirwu2025@qq.com」,  the rest of the authors' tests are not affected.

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Email used to submit tests: mahirwu@qq.com

PAYPAL: mahirwu2025@qq.com

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2024/12/18: Personal PAYPAL account changed to 「mahirwu@gmail.com」,  the rest of the authors' tests are not affected.​