Nothing says my data is secure like encryption being performed in the Czech Republic in an add-in written by, well – who knows.
To be clear, I don’t think Airtable is the biggest risk factor when handling CC data for your customers. While the Czech Republic is supposed to adhere to the EU’s GDPR, oversight of the development of security technologies is not so certain or well-controlled.
Integromat is a phenomenal company and they take security issues very seriously. However, adequate security protection is often about the number of attack surfaces in a solution; the more interchanges that occur, the greater the risk of breach. Furthermore, the type of data vastly increases the risks with CC data at the very pinnacle of the threat envelope.
Setting aside the process of becoming a PCI-compliant app, consider these rules. Are you sure you want to use Airtable to do this?