I ran into a few hurdles while building SafeMask. The first was getting the hidden/decoy mode to work without crashing, so I separated the fake UI from the real wallet logic and loaded it only after the secret gesture. Fetching real on-chain balances across multiple networks was also tricky because RPCs would sometimes fail, so I added retries and fallback providers to make it stable. Managing seed phrases safely inside a disguised app was another challenge, which I solved by encrypting everything and never storing anything in plain text. And keeping the CI/CD pipeline running smoothly took time tests would break often because of small changes so I added automated checks and cleanup scripts to keep builds consistent. Together, these fixes made the whole system more reliable and secure.