Preinstalled Apps get updated with OS updates. Is there an /e/ update available for your device?
Alternatively you can try to install the current Magic Earth version using Aurora Store, which is an Open Source client for the Play Store giving you access to cost-free Apps there with an anonymous account.
In this case be sure to use Aurora Store’s Blacklist manager to blacklist every App which you didn’t install via Aurora Store (yes, these are many) to not confuse the system, Aurora Store or yourself with updates which Aurora Store shouldn’t offer 
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