Can I change my Salesforce settings that I saved when I initially logged into my Salesforce account?

Yes, you can. You can change your Salesforce settings manually. Please follow the below-mentioned instruction set:

- Open Circleback application.

- Tap on Settings at the left-hand side top corner gear icon.

- On the next screen, please tap on Manage CRM Accounts and then tap on Salesforce. 

From here, you can :

i) Set your exporting preferences as Lead or Contact.

ii) Turn on/off the prompt for object type while exporting a contact.

iii) Logout/login within your Salesforce account.