Other Fuel System Hoses Lines/piping, And Fittings problems of the 2016 Honda Civic

I had an engine light on on 8/5/2918 call dealer ship to set an appointment on 8/6/2018. Advice found ftc p2422 evap cvs stuck closed indicating ftp sensor and canister malfunction, canister to malfunctioning due to the geographical are where vehicle is driven and park. Dust and dirt will collect and clog the system. . This happens on Sep/2017 . 1st time was cover by manufacture not this time I got extended warranty for 6 years they said no, cause was same problem within a year and was not a manafucture defect. I called America Honda they agree to pay one more time only out of warranty. But this is going be at no ending problem for me, I have a cap less on gas tank which is not sealing right and main problem causing all dust and dirt getting in. They said the dust wasn't getting they gas tank, but they're not able to tell me howdust and dirt getting into the canister. I want this to get ivastigated because this is a manufacture defect, I never got a disclaimer saying if I drive car on dust or dirt will be causing this problem, year after year, the cost of $700. 00 plus $100. 00 for diagnosing, worst experience ever. Please help me.