2004 SEAT Ibiza 1390CM miles

I have problems starting.
It starts from the first (or hard starts) and a sensor in the dashboard lights. Start at the second, third or fourth key. I put it on the tester (twice on two servers), reported two failures, we changed the camshaft sensor and temperature sensor and nothing.
Do you have any advice??
Help !!!!!!

I WANT ANSWERS TO RECEIVE MAIL ADDRESS
costachea2000@yahoo.com
Thanks!