I was using TDR Nova with Garageband on my MacBook Pro. I upgraded to an iMac (Mac OS Catalina 10.15.6) and Logic Pro X but I can't get TDR Nova to work. I get a message saying "TDR Nova.component" can't be opened because Apple cannot check it for malicious software. I've downloaded TDR Nova again from the website; I've checked that it's in the appropriate file location (with TDR Kotelnikov, which works fine on the new computer and with Logic); I"ve deleted it and downloaded it again, just in case; I've switched off my iMac and re-started to try that. Nothing works.
Am I doing something wrong or is there a problem with the software? Any clues/ help is appreciated.