I wouldn't re-glue it - in my unsuccessful case this was very sensitive coral, unlike the white lemnalia. I bought the big coral, it wasn't standing upright, and moved itself toward the sun (as sunflower) onto opposite side of the LR:
In a few days the stem started to rot, had to cut off this part, what was left - inserted into LR crevices, it attached itself pretty fast, without the glue.
The small pieces were upright (the small one behind the xenia):
No growth at all, several months later they vanished in reaquascaping. The tanks are basic, PC plus sunlight, softies, LPS, baby Maxima clams, Christmas tree rocks.
Can you post tank photos, what light, type of tank, any observations?
I like this coral and would like to try once more, if will found what it needs.