We purchased Publer in December 2020, with the objective to manage all our postings to FB, IG and Pinterest from a single place.

We started the set-up in February 2021 and quickly discovered that the IFTTT free connection to Pinterest didn't work at all.
We contacted Publer via the chat and were told that they knew the issue, and that they were working on it.
The alternative was to use Zapier at 20$/month... not good, as we got a life time deal for 50$ for Publer...

As nothing changed, beginning of April, we contacted the chat again to finally got the answer that ".... you can see that it is a problem that is coming from IFTTT and not from us."

And more "I am sorry for the inconvenience, ... there is nothing we can do. We can only be patient and wait on IFTTT to fix it."

Then we pointed out that at that time (April 2nd) Publer was still promoting the IFTTT connection on their home-page. "* Until we get direct API access, automatically posting to Pinterest is done via either Zapier or IFTTT."
By that date, the connection was no longer working for already one month....
The answer was '...Thank you, we will be editing it accordingly."

Now 15 days later (April 15th) surprisingly (or not) Publer's home page still promotes the connection to Pinterest via IFTTT....
When contacted, Publer pointed me to a page buried in documentation page which states '...IFTTT has been facing some issues with Pinterest recently, which they are working on fixing. Learn more about that..."

That's blatant dishonesty. Who is going to read the whole help documentation before purchasing.
Publer, seriously?

So we would advise to stay away from this product until they fix their technical issues and stop making fake claims about the product capabilities.