In less than ten minutes I was messaged back by customer service via email, it's 11:15 pm by the way, and the problem at hand was resolved immediately. This is not a robot or program typing this, I am a real human being, my name is Mike and I totally love PDFfiller.

I was really in a bind & PDFFiller rescued me. I'm grateful that this service is available & so easy to use. I was able to produce the document I needed in no time at all.

The UI is outstanding and very effortless. Very impressed. My only issue was with advanced features. Would have liked to know ahead of time that they were additional fee. Everything looks included and don't like being told something cost money after the fact. Second, when telling me I had to upgrade to get additional feature, it should show the difference between what I am paying verses the new amount. I was on personal plan ($6) but to get the features I needed it was ($10). It said it was $10 for advanced plan but I didn't know if that meant $10 MORE than I was already paying. I had to open site in incognito mode, look at plans to figure it out... not fun. Lastly, I was trying to send 2 separate PDFs as one doc. It took me a while to figure out where Merge was. I didn't understand why all the options under Actions were greyed out. That was very frustrating and should be improved.