A TEU is a twenty-foot equivalent unit, which is used for cargo ships and container ports, and ICS flag could refer to the International Code of Signals used by watercraft. Obviously granny is talking in code about her international smuggling operation
Eh, I think this is less aneurysm and more extremely bad at typing.
They seem to be asking for help with digitally signing some kind of technical document based on income, where some other kind of program isn't available in ... whatever maripn is a misspelling of, possibly marion.
An aneurysm post is one that is total word salad gibberish nonsense even if it didn't have spelling errors.
Like... My goldfish spoke to the trees which have blue in their accounts but maybe trees actually forget when sometimes cars live to rectangle the blue.
You can misspell the hell out of that, but what makes it aneurysm is its totally nonsensical even without the misspellings.