I have a feeling that this is going to be a long post.
I've been using Affinity for over a year, I guess. Never had a single problem. Recently I got some print jobs: labels and posters. Both of them returned errors from the print shops.
At first, people could not handle PDFs. They could see them but not print them. I'm not sure how they were used but in Brazil, pirate copies of Corel Draw are wildly popular. They probably tried to import the file and Corel Draw rejected it. No biggy. Quite common actually.
Label guys reported errors regarding EPS. The Corel thing is certainly a factor, but I rarely had problems with Corel and EPS.
Things got really strange when a client tried to print PNG from our fanpage. The print shop reported error while importing PNG! I've had handled Affinity generated PNG through Krita, GIMP, inkscape. Never a single problem. Then I asked a friend of mine, registered legal user of Adobe CC Suite and neither Illustrator nor Photoshop could handle my PNG!
Then, GIMP reported and error with Color Profiles in two different PNGs. One color profile for each file. GIMP asked me about assigning new ones and opened up the files, which I exported (from GIMP) to make new working PNGs for the print shop, who's confirmed that they now work perfectly.
Weird, isn't it? I've made working PDFs for printing for over a year and never had any kind of problem. I use Affinities for web to the point of getting excited about how easy it is but even my web PNGs are failing somehow. You see them here www.facebook.com/spavendanova (my client) but I have just discovered some issues.
I appreciate your attention.