These two buildings seem like they should be one. Other buildings here might be slightly off too. Maybe aerial photos could help clear it up. I added address 35 as a point for now but it would apply to the building if the two pieces would get connected.

Parking lot here is for the pottery store. Could benefit from aerial photos for this.

The whole building containing the Asia Restaurant is gone. Part of its old footprint is taken up by expanded private parking for Ross Furniture. The rest of it, PLUS the parking lot to the left, is currently a whole big construction zone. Hopefully this can be seen from aerial photos. I didn't want to do this from on site.

"H&R Block relocated to 110 Tri City Plaza Somersworth per to a sign here. Still unoccupied."
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-03-26T20:04:01Z
POI name: H&R Block
POI types: office
#organicmaps android

"UPS store is closed. I've heard they're trying to open a place in Rochester soon."
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-03-26T20:04:01Z
POI name: The UPS Store
POI types: shop-copyshop amenity-post_office
#organicmaps android

Unable to answer "What are the opening hours here?" – Asia Restaurant (Chinese Restaurant) – osm.org/node/9071376398 via StreetComplete 57.1:

This building was demolished! It's a hole in the ground. We should probably remove it from the map.

Diversions and all the tags attributed to the building should be moved to the node with the 123 house number tag. The whole building was previously tagged 123.

This building should be split into two right where the note is. I can see the air between them.

"I confirmed with a barista, it's not called Bloc 11. She's not sure if it ever was."
OSM snapshot date: 2023-07-10T17:38:00Z
POI name: Bloc 11
POI types: amenity-cafe
#organicmaps android

There's a parking lot (for residents) here if someone wants to properly map it out. And also some paths around buildings addressed 100 and 200. I added those buildings recently, and removed the outdated roads that were occupying the same space.