Why did my GE refrigerator water dispenser stop working

I have a GE GSS25QGTBWW side-by-side refrigerator with water and ice dispenser in the door. I’ve been negligent and hadn’t bothered to replace the water filter, mainly because the flow has been fine (I’m on city water, so there’s probably not much to filter out). However, I know that it was years overdue, so I purchased some aftermarket replacement filters.

In short, the water/ice was working fine before I removed the original filter. Now that I’ve swapped it out there’s no water. Not only that, I put the original filter back in and there’s no water from it now either. Nor with the bypass plug installed. I can hear the relay switch cycling when I press the dispenser arm, but nothing is coming out. Water is getting to the filter, as it will pressurize when I take it out/reinstall it, but nothing makes it from there to the dispenser.

Already tried holding the dispenser arm down for several minutes to no avail. I’ve also probably cycled it (clicked the dispenser arm and released it) over 100 times. One time when cycling it I heard a burbling of water from the hoses, but that only happened once.

All of the above attempts to get it working happened over a very short period, so there shouldn’t be any issue with something freezing up while I was changing parts around. Searched around online and can’t find anyone else describing something like this, so I thought I’d give it a try here. Not sure how I managed to “break” something by just swapping a filter! Thanks in advance!

Update: The ice maker is working (gray ice from the carbon in the new filter), but still nothing out of the water dispenser.