Needs Help 986 triptronic transmission

[Badboy67]

I purchased this car two years ago and unfortunately haven’t been able to enjoy can’t find a honest mechanic in Miami , Florida after expend thousand of dollars no of them fix the issue.
1998 boxster automatic triptronic, car shifter good when is cool or under 185 , this is was is doing after car gets to temperature I loss the reverse and the D and 4 light on the cluster start flashing if I wait for the car to cool down run and drive and shift good .
Sorry about my writing in English.

PLEASE Help , I love the car but can keep expending more money with out enjoying the car