Calendar Sync Not Working On New Computer.

I have been using Clinic Office IV since 2009 on the same laptop which has been getting steadily slower over the last two years. The OS was originally Vista and later Windows 7.
I have bought a new Acer Swift laptop with an i5 processor and have installed Clinic Office on it and transferred my license and database successfully. My Clinic Office license includes the Calendar Sync module.
I have also installed my paid for copy of Outlook 2007 which is working and syncing calendars and contacts with my iCloud account.
I did have a problem on my old system due to Microsoft Security upgrade KB4011200 for Outlook which stopped Clinic Office from syncing with Outlook. The solution was to not install that upgrade and all worked well.
The Calendar sync is important to me as I only work in the clinic where I use Clinic Office for two half days a week and it’s important that I can see appointments on my phone when I’m not in that office.

On the new computer (Windows 10 Home 64bit), upgrade KB4011200 was installed automatically but I have uninstalled it and blocked it from being reinstalled.
Unfortunately I’ve been unable to get Clinic Office to sync with Outlook 2007 on my new computer. When I click the sync with Outlook command the new window has the message “Unable to detect any Outlook folders. Either MS Outlook is not installed on this computer, or it is not configured properly”.
The ‘Outlook Data Folder’ dropdown box is greyed out so I can’t manually connect to the Outlook.pst file, or choose to connect to another calendar, Google for instance.

How can I get Clinic Office to connect to Outlook 2007 on my new computer? As alternatives I would be happy to sync with either the Windows 10 Calendar App or with Google Calendar but haven’t found a way to do this.

Thanks in advance,
Jon