The problem PolySwap (Polygon Swap) solves

It solves the problems faced which are faced by sentralised servers and exchnages:

1. Server Down Time which cripples transactions.
2. Cyber Attacks which are threat to security.
3. Corruption which can manipulate vital public ledgers(government records, property records etc.)

This ERC 721 Decentralized Exchange(DEX) solves all these problems with the tighest security implementation.

Challenges we ran into

The challenges we ran into were as follows:

1. Web3 core libraries integration were a bit glitchy.
2. IPFS hash generation takes sometime.
3. Release escrow services had to be implemented with a callback to get the new generated Escrow.
4. Making the escrow an ERC721 reciever contract.
5. Linking IPFS hash and password for NFT token creation.

We were able to get over most of these challenges and learnt a lot to counter them for better app development.