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Q: It seems there is no taboola id and I am curious how it will track only with click id parameter name and event name?
A: Whereas Google, Bing, Facebook, etc. all have pre-defined click ID parameters, Taboola does not. With Taboola, you tell us what the Taboola click id parameter is that you configured inside of Taboola and UltraCart will look for that parameter and store it off on the order. Then, once the payment is processed, we'll automatically do a server-to-server (S2S) postback to Taboola with that click id to the given event name that you configured. Please note that all of the S2S communication is logged within the integration logs system.
Q: What about advanced ad tracking? The person I'm using to run these ads has been doing it for quite some time, with success, and the ability to identify which ads are working are important. He said he likes to use 5 subIDs - to record ad, referring site, device etc. so I usually use 5 subid’s. I did read that there's room for only 1 subID, but it can have up to 5 parameters within it? Would this work in this situation or no... I can't tell.
A: If Taboola won't actually tell you which of your ads are working and which are not, then passing additional parameters in the UTM fields is probably the best bet. All of that UTM data is available in BigQuery on the order and your marketing person can write some custom SQL reports to extract whatever data they want.
https://ultracart.atlassian.net/wiki/spaces/ucdoc/pages/994705409/Data+Warehouse+BigQuery?src=search
There are numerous queries related to UTM in the documentation.