It took me some time to master it. But overall, no more than 3-4 days. Once you familiarize yourself with their interface, it all runs smoothly. But I guess, this would be with any software you choose. All your files are secure.
The key point being PDFfiller is HIPAA compliant, that's all we need, actually. Functionality - alright. I am sure I am not using half of the buttons on my screen in PDFfiller, but that's not important. Still does what it promised to do, no complaints.
We are using PDFfiller for two months only by now. Don't see any scam in there, nor other problems, actually. Contacted Support in their live chat couple times - worked alright, got what I need in roughly five minutes.
I am literary shocked by some of the comments posted online about PDFfiller! I am not their user personally but our company have been using them way before I got here, and it works smoothly, not a single objection or error in years, not even months. To all those weeping about the scam: Guys! if you don't read before you agree to be serviced and provide your credit card details (volunteerly!) - that does not make it a scam. You need to understand what you are buying here and what conditions and deadlines, as simple as that. Imho, quite a reasonable price for the market, provided you plan to go fully paperless though.
First month was a real trouble, honestly speaking. I seriously thought this is too sophisticated for me, too much of various icons and buttons, all that. But it turned out to be super easy, obvious and straightforward at the end. Now I am keeping like 50% of all my docs in PDFfiller, both business-related and personal (like all those paper you need to sign for kids' school). I am very satisfied, no complaints whatsoever
If you expect something super cool for free - then this will be a disappointment, of course. I recommend you just pay for the very basic plan, relax and use it! I was with Adobe for couple years because I did not know about this app. Now I switched and I am very happy about it. It costs less, has exactly the same things in it and is also muuuuuch easier to understand. I never had doubts!