The problem Kolumn solves

Kolumn is a platform for writers to share their work on Blockchain.
It basically means they make their work immutable, and share it in it's purest form without any censorship.
Another thing which makes Kolumn applealing to writers is the fact that they truly own their work, no central authorization is making money out of it, there are no ads, no spyware, it's just pure content.
Users can support Authors by sending them crypto-currency which again is done without cutting any perchantage from the transaction (Other than network fee).
Thus Kolumn is a community driven platform powered by Polygon Matic.

PS : I have also worked on an Extendable text editor which looks minimal and provides basic text formating.

Challenges I ran into

Lot of them! This is the first DApp I developed so there was a learning curve to it. All thanks to the community who helped me out with the resources.
Another issue I faced was deployment. My contract always returned an RPC error whenever I tried to read data from it, it was again a huge thanks to community and folks who realised that it was an issue with my deployment and helped me out with it.