I am new to MC and looking to see if anyone has had success integrating Formstack to SFMC.  A few issues I've run into

1) Instance - to find it it says look in my url when in SFMC, but that says 11 and it's not available as an option in the Formstack Integration

    a) also have same problem integrating Sumo to SFMC

2) Was hoping to place all records collected in those forms into a data extension to run a welcome series off of these.  These records shouldn't be injected into my master contacts as I have a nightly CDI process i run outside of SFMC that will connect that record to other information

Would love any support and help you can give.  I am a marketer trying to play an "admin" role to move the data.  So might need more help than the average.  TIA