Rant alert - Connection to server

Ok first off - I love FF14, I have had pretty much weeks of uninterrupted play after the initial glitches.
However over the last 5 days it has basically become unplayable. I can't stay connected to the server for more than a few minutes. All game progress for me has ground to a halt. I can't do dungeons, can't follow the story, and am therefore resorting to crafting to try to fill my time - which clearly isn't what I want to be doing.
My internet connection is excellent, my partner sits in the same room and plays without interruption.
Please, if anyone has any ideas (can I just say I'm a 50+ non-techie person so in English please! :) ) that I could try to fix this issue, I would be eternally grateful.

Many thanks....

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