Yes, I did a search , heritage lost several times correspondent banking , maybe now it is better .Well, 'better than other banks in belize' doesnt say so much since the only other bank in Belize is Caye bank i believe. Your service provider may help you to open the account but how the bank operates on a day to day basis may be another story. Search the forum for heritage bank comments.
What about local banks ?Yes, 2 offshore banks left i believe. Heritage losing correspondent banks, like caye is a sign that they may be the next one to go bust. Offshorebanking may not be a good idea in 2021. Unless it is your last resort.