Guild Wars 2

I had this issue with the quaggan underwater guild rush in Frostgorge sound the other day. When my guild (lets name it [V]) arrived at the start, another guild [X] just launched the rush. We did the rush anyways, knowing we could claim the reward afterwards (as long as someone from our guild completes the rush). At the end of the timer, we had the pop-up dialogue asking if our guild wanted to accept the reward, and clicked “yes”.
Then guild [Y] showed up and launched the rush during the small delay (around 30s) beetwen the end of the rush and its actual validation (with the chat message saying the guild successfully completed the guild mission).
The rush was not validated for the guild and we didnt get the guild merits. The rush was still available in the mission tab with 5 hours remaining.
I first thought that someone chose to not accept the rewards, so I stayed there when the others went to others missions, completed the rush once again, and chose “I accept the reward” at the end of the timer. I am sure I was the only one from my guild in the area, so noone could have refused the reward.
Then guild [Z] showed up and launched the rush during small delay (around 30s) beetwen the end of the rush and its actual validation…
Once again the rush wasnt validated for our guild. I came back at the end of that 3rd rush but failed at completing it and couldnt claim the reward. The rush was still active in our guild tab with 4 hours remaining.

Not that we really needed the guild merits (hitted 250 that evening with puzzle and challenge) but it is still very frustating, especially if you are in the process of unlocking the missions