find your florincoin.conf file (if you're on a mac it should be at ~/Library/Application Support/Florincoin/florincoin.conf, idk where it is on windows, hopefully someone else can fill that detail in if you are)
change
rpcallowip=192.168.0.*
to
rpcallowip=192.168.0.0/16
save and close the file, and then try to open you wallet again
Thanks Blocktechceo- I don't have a folder for florincoin following that path. Is there a way for me to create one?