Can I change the fanpage?

Absolutely YES.  Each shop includes many fanpages. You can disconnect from a page and connect to another page at any time.

Note: when disconnecting from a page, all data will be deleted: blocks, customers, conversations, ...

To disconnect a page from Fchat:

Step 1: Go to Dashboard >> click Disconnect at the fanpage you want.

Step 2: Then click on the "+" blue background to connect to the new page.