2012 Polaris Sportsman 850 EPS

Good Morning,
I purchased a used 2012 Polaris Sportsman 850 EPS roughly 5 months ago that had 600 miles on the machine. There was only one oil change done on the ATV since the original owner had it and I can tell it is starting to run a little rough as I have put on another 200 miles on it since I have owned it. I am looking to change the oil and have a question on oil filters.

I live in Minnesota, is there a local place like Fleet Farm/Auto Zone/Walmart that would sell the correct oil filter? If not, where would be the best place to order the filter from online?

Also, my EPS light came on last week and the EPS stopped working completely, has anyone else had this happen? I was going to look at the power steering fluid to make sure that is filled.

I am a first ATV owner, any constructive suggestions with care and maintenance on this model is really appreciated!

Thanks,
Jeremy