No help for installation.

On 13. September I downloaded trial version that stopped working on 30 September - so I bought 2019 and deinstalled the trial version as it did not work. Surprised I was, that I cannot install Trados 2019 as I receive an error message "there is already a newer version installed"..... I am loosing time and money, as no one seems wanting to help me with installation unless I buy a further maintenance contract. For next year I will definitely see, if I change to another translation software...