The temps are fine with anything between 86 and 92 for incubation works (also I do not recommend over 90) so it really depends on what the fluctuation may have been. Lower temps are less dangerous of higher temps. What I would recommend is a temp gun and random temp check but most importantly a RELIABLE thermostat.
Now as far as humidity if it was low the eggs may have start drying out or collapse (hard to tell without pictures). If this is the case you will need to add water to your substrate.
For reassurance just candle the eggs for now, that's all you can do, for the rest you will have to wait and see, it's hard to predict outcomes not knowing exactly what temps the eggs were subjected to and for how long.
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