Delonghi ECAM23210SB - Slow drip / pump struggling!

A few days ago, I accidentally put grounds in the top hatch while it was in rinse mode (when it warms up water after turning it on and performs a rinse cycle if necessary).

It then threw a couple error codes. Over the previous couple days, I have repeatedly cleaned it out. This includes looking inside and pulling all grounds out of every little nook & cranny with the brush, and rinsing the __ a few times. At this point, it appears to be 100% clean.

When I first made my mistake, it wouldn't spit any water out of the nozzles. Now, it DOES! Unfortunately, it is a very slow drip.. It takes at least double the time it did before to fill up a cup of the same size. This led me to believe there could be a clog in the water line but I could not see any after taking off the side panels.

Any ideas what could be the problem at this point?

Video of how it not working at all right after incident:

https://www.youtube.com/watch?v=a2nTgL0u...

Video following a few days of cleaning (part 1/2, working but slowly):

https://www.youtube.com/watch?v=kMcsCjoZ...

Video following a few days of cleaning (part 2/2, can hear pump varying in noise):

https://www.youtube.com/watch?v=4e3Yfzv4...

(Videos are cumulatively 2-3 min long.)