If you are trying to connect your Jamstik to your Macbook via Bluetooth and the Jamstik keeps disconnecting with Logic Pro open please refer to this article: link
If Logic is not open please refer to: Resetting your computer's PRAM/NVRAM
Take a look at the picture below. We have turned on the Jamstik itself and opened Audio MIDI Setup. The Window clearly shows that JS1056B5 is advertising Bluetooth signal, but when clicking on the 'Connect' button, the light never turns green or shows a solid connection
Here is the walkthrough via Apple's Support Pages
If you are still experiencing issues, please submit a ticket and we will be happy to walk you through troubleshooting via the Help Center.