Fotolia have two and only TWO rejection reasons:

1. Technical issue (whatever it is in reviewer's opinion).
2. Similar image.

Reviewer have to tap one of those two buttons under each of submitted images.
This means Fotolia could not point out exact reason for technical reject: blur/noise/filters/etc, it simply does not saved anywhere. So they give you this long list, from which you can choose yourself whatever fits best :-)

Btw, they have really crappy notification emails: subscription preferences link goes nowhere, for non-english emails translation is incorrect and ugly as hell, and also you can not switch email language back to english anywhere.

But at least they sent submission status per image, unlike Alamy who send review status per batch. i.e. you, as a contributor, could be treated even worse (in comparison).

Some advice from Russian here.

Before going to a country you never been before ALWAYS google it�s local emergency numbers (phone numbers for police and ambulance, they're not always the same). 911 or 112 are not an option in far too many countries.
Note: sometimes emerg. numbers vary from one cellular provider to another (google provider you are going to use, for example: vodafone emergency numbers). It is always better to buy a local SIM card, because with your home SIM you will be able to dial only 112 (which can fail you in some not-so-rare cases).

Toughest situations I got into happened with me in Israel (100 for police and 101 for ambulance, if you care :-). Nothing really tough though. Just bunch of muslim teenagers who have tried to rob me. Discrete posture and rude language worked well that time.
Large cities equals constant danger, keep that in mind. Safest place I ever been is Montenegro.

Do your best to learn how to pronounce name of the place you are going to, preferably in the native language.
Always prefer shoes and clothes in which you can run fastest (sneakers instead of heavy boots, you know).

If you feel in danger, better call a police. If you forgot to save a particular emerg. number in your phone, call 112, or simulate a call. Stay at the distance and stare directly at the source of danger, while describing it in details to your (imaginary or real) phone interlocutor. In case of real danger this will probably work much better than trying to take a photo or video of subject onto your phone camera (feel free to do it after a call).

ALWAYS keep your distance, especially when someone is following you.
At evening and night you can carry a metal flashlight with you (on flight put batteries in the regular luggage and not carry on luggage). Those things have two useful functions: blind aggressor with light and smash him in the head, but really-really good strategy is to blind aggressor and run away.