Dear Anton,
I do not have time to review all your theory (www.quantumgravity.nl) but I can explain my point of view about the statement ''photon's emission and voyage never can be ''a single event''. Even if you agree about there can be no Absolute Time, nevertheless your example with the photons is based just on the notion of Absolute Time. If the time is frozen for photon, its emission and absorption are different events because these events do not coincide in space and time. If you think that these events coincide in time then you use the notion of Absolute Time because Time flow differently from place to place. Also these events are SPATIALLY separated, consequently both events are different events. In addition, you confuse again the photon's and observer's frames of reference. For example you say ''The symmetry between A's point of view and that of B, that according to A, B changes at the time it emits the photon'' - it is the observer's frame of reference! In general, all your paradoxes appear because you use the photon's frame of reference; Meanwhile, you are the OBSERVER but not the photon. Observers are not able to move with the speed c because it is forbidden by relativity. Besides, photons never violate causality.
Sincerely,
Constantin