You cannot change Diablo Immortal PC resolution, atleast not yet

Diablo Immortal is out now, with full support for mobile gamers worldwide. PC players can also play the game too, however, the PC client is a little
PC players are finding that you cannot alter the Diablo Immortal PC resolution, at least not yet

Diablo Immortal: How to Change Your PC Resolution

Diablo Immortal PC Review

You cannot change Diablo Immortal PC resolution, atleast not yet

Diablo Immortal Review - Evil On The Go - GameSpot

Diablo Immortal launches June 2 for iOS, Android, and PC open beta - Gematsu

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Legendary Gems Guide for Diablo Immortal - Wowhead

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In defense of mobile Diablo Immortal

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Diablo Immortal (for iOS) Review