There’s been a lot of suggestions for an Aeropress, and I don’t want to retread any ground, but that’s a good suggestion. Since you said you didn’t want to rule out pour over though, I might recommend the Hario Switch, so that you can experiment with both immersion and percolation brews in just one brewer. It functions similarly to the Clever Dripper that someone else recommended, but since it’s the same shape as a V60 it has the added benefit of being able to leave the switch open and brew a standard V60.
On cold brew: I don’t recommend making it and reheating it, but some people do. At best, I would make a super concentrated cold brew (maybe 1:4 or more if I could really push it), and add hot water up to the final volume to get a hot beverage. Reheating coffee leads to it losing a lot of its volatile organic compounds that contribute to the interesting tastes and smells that you get from coffee. Cold brew is suitable for “meal prepping” your coffee though if you don’t want to make time in the morning. If you’re at all interested cold brew, I would even more strongly recommend either the Clever Dripper or Hario Switch. You can use them to filter your cold brew after it’s done steeping, which would be much more tedious in an Aeropress.
This was happening to me until I repatched and reinstalled the app. I didn’t change anything between installs so I’m not sure what happened.