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This could be due to any number of things. If they did not have sufficent chilling, then their blooming will be poor. If the plants are overcrowded, then blooming will be decreased as well. Light and drainage can be issues as well, but only if nearby trees, etc. have recently changed would this affect you or your neighbor. Finally, the soil could be lacking phosphorus, which is important for flowering. You can mix bone meal in the soil around your plants to add more phosphorus.

For additional information, this article will help: https://www.gardeningknowhow.com/ornamental/bulbs/daffodil/daffodils-not-blooming.htm

You may want to consider storing them until fall. Daffodils require a cooling period in order to produce healthy blooms each season. Planting them when it's hot may interfere with this natural process, as they're usually dormant this time of year.

This article should answer some of your questions: https://www.gardeningknowhow.com/ornamental/bulbs/bgen/forcing-bulbs.htm

This article has good information: https://www.gardeningknowhow.com/ornamental/bulbs/daffodil/daffodils-not-blooming.htm
However, it didn't address your question. I think your lack of bloom expansion could be weather related. At least that's what happened to our daffodils this year. As the buds were developing in the seath, we had really bad weather, and they just gave up. Don't cut the foliage until it starts to decline on its own. This feeds next years blooms.

Keep the foliage fed and watered until it starts dying back on its own. That feeds the bloom bud for next year.