What you are experiencing is 99.9% likely due to your focus settings. Work on your dominant eye first. Since you’ve been able to successfully focus on stuff up close, do that (adjust your objective lens focus to that near distance) and get your diopter (eyepiece) focus dialed in. Then look at a star and adjust your objective until the star isn’t blurry and nice and sharp or as sharp as you can get it. Repeat on your weak eye and confirm both are good to go looking at an object with some detail that’s within infinity focus distance such as 100 yards or so.

ETA: the way the lenses work is everything at infinity focus distances will be in focus but up close will be out of focus.

I'm assuming you are dialing in your diopter as well? Nothing should be in focus if the diopters are set poorly (the diopter adjusts the image to your eye, whereas the object focuses to your "target"), however inexperienced users may not know what "right" is supposed to look like if they're only familiar with images online and YouTube videos.

Adjustment should be front (objective), rear (diopter), front again, to dial out any focus errors between your eyes and what you're looking at.

Are the objective lens assembly bottoming out against the infinity focus stops (flat rings behind the rotating objective lens assemblies).

It is possible that they may have been set incorrectly by the assembler.

The infinity focus stops/objective lock rings should be set such that you can go just slightly past infinity focus before hitting a hard stop, allowing you to dial it back in, however if they were set incorrectly, you may be running out of adjustment to properly focus at distance.

~Augee