First off, I just wanted to thank you guys for the help!
Turns out that it was a simple browser issue. Such a simple solution to a complicated problem, I hope I didn’t waste your time, you guys. ^^() I tried updating the same problem posts with Firefox and everything worked perfectly. I still don’t understand the sporadic problem with Opera but at least I know that I can update successfully somehow.
If this issue does arise with Firefox, I’ll be sure to contact my host like you pointed out esmi.
Again, thank you shirazdrum and esmi for your help!