Turns out it was the browser I was using at the time that didn't like mega.nz
Switch browsers and it's working now.

Files & Decryption Key(s) for "Minecraft: Story Mode - Season One"
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File for Part 1:	https://mega.nz/file/K6gi0ISY#PsdUO7hDUGmS8m59hFfA9OSnZFkaR7uEoiKcPZ5MDmI
File for Part 2:	https://mega.nz/file/nqgQGCDb#XG6RtvtSyVO3e-pPCY7f3oznjC_Fkk_CGon24hWTvjo
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Files & Decryption Key(s) for "Minecraft: Story Mode - Season Two"
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File for Part 1:	https://mega.nz/file/imxWSSJJ#XskXR54w3oKWcrgYfR74ETulLmoEprleqhbrvNLwypk
File for Part 2:	https://mega.nz/file/byhGnKRS#n7w461RtMUTMuRh2wcLjpAuQFyrpXmhu7usPP-oAgBo
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Credits: https://getgamez.net/ & https://cracked-games.org/