page unresponsive

hi, i can't edit some of my forms as the page won't load. i tried on different browsers, emptied cache on jotform, tried different networks, still the same.

This only happens on some of my longest forms (not all of them, even if they are identical). all the short ones are fine. i haven't changed anything on the forms recently and they worked fine until few days ago.

please help asap

thank you

Val