It is unlikely that there is an installation issue but I am attaching some info that will help with running through just to make sure you are not missing anything.
https://www.2carpros.com/articles/crankshaft-main-seal-replacement-rear
Next, I would suggest checking the compression just to make sure it is not low as you could have some blow by that is causing excess pressure in the oiling system.
Normally this causes some other issues but it very well could just keep pushing this seal out.
https://www.2carpros.com/articles/how-to-test-engine-compression
Let's run through this info and let us know what you find. Below you will find the info from the manual that will help as well. Thanks
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Sunday, September 26th, 2021 AT 11:29 AM