All that warning means is that someone with a bone to pick reported the site as hosting malware. If you know the site is clean then click ignore and in the report response popup explain you know the site to be non malicious. the warnings will cease.
In the case of Imagecredit.xyz I have always been unimpressed, but since I kicked up the awful stink the last time it might seem as though I have some kind of pathology if I made an issue again.
Of the imagehosts their ads have often been on the more aggressive side, but I find using adblock plus extension keeps most of their popups at bay without interfering with the imageloading. That's the best we can hope fr these days.
I'd be interested to know what the results of your conversation are.
BOC