Ryanair complaint: Compensation for missed flight and Ryan Air fine

On a flight from Athens to Santorini (FR1232) on Ryan, my wife and I both tried to check in online 4 times and the system would not allow us to check in. When we arrived for our flight on Aug. 14, 2019 2 hours early we faced a long line. When we got to the clerk we were informed we must pay a penalty for not checking in online. Not having any choice I went across the airport to a place she told us to pay a fine. For 5 passengers, I paid Euro341. I was told I could appeal this after. We got back in line after this long delay and received our boarding pass. We were directed to a general, not exact, gate area and informed we would have a long walk. We walked for at least 30 minutes following directions from officials on the way to get to the gate. We were misdirected and walked back and forth under the airport until arriving at the correct gate. The plane was still there but the gate was closed. We missed our flight and went to another window in the terminal and were told the next flight was 23:10. This was too late to check into our hotel on Santorini. We were also told there was an Aegean flight we could book and Ryan might cover the cost. We booked that flight. The Ryan policy of fining us for not checking in online caused the delay and was due to the Ryanair online check in sight mal functioning. Also, the clerk’s inability to specify the correct gate contributed to our missing the Ryanair flight.