Stripe has recently taken steps to phase out older security protocols (SHA-1, TLS 1.0, and 1.1) that are much weaker than what is now currently being used now(SHA-2 and TLS 1.2). Basically these updates help insure security when capturing payments.
What this means for you: You will need to check and make sure that the API key in your InkSoft account has using the most up-to date API key. This will help prevent customers from running into TLS errors when checking out.
This guide shows you how to check and upgrade to the latest version of Stripe's API.
After logging in to your Stripe account, click on your profile from the top left navigation as seen below. Upon clicking your profile name you can select 'Account settings'.
Click on the 'API Keys' option as seen below. If an upgrade is available it will display as a button as seen below. Click the 'Upgrade available...' button to proceed.
Click the 'Upgrade' button to proceed.
After successfully upgrading, you'll see the current API version which should read 'latest'.
NOTE: There is always an option to 'Roll back' to the previous version if any unexpected issues occur.
We always recommend testing any and all changes made to InkSoft to confirm. You can process a 'test' transaction using credit card: 4111-4111-4111-4111 Exp. 1/19 and Code. 111