Maybe I didn't explain my problem too well. Try again.
I do all the usual things, save ADIF file, sign it by TQSL upload to LoTW.
Trying to get my QSLs I download from ARRL the report which when synchronised with LoTW should show my QSLs in LoTW.
This fails and all my QSOs get put into the Mismatch file and they are mismatched because there is no LoTW QSL sent.
But as i said earlier I have checked send QSLs to LoTW.
I need to say here I am a computer idiot, so please bear that in mind.