Lousie, I just re-watched the insta post you linked, it is brilliant, I really recommend ppl watch it. Reading the posts alongside someone wrote something very informative, I will copy-paste it under here.
"Ladies, if you read the Patient Information Leaflet of Oestrogel you can see that the product used to be manufactured by Delpharm im Drogenbos, Belgium. The recently changed PIL (December 2021) says it can be manufactured by Delpharm in Drogenbos, Belgium OR Besins Laboratories International, in Montrouge, Paris, France (LBI), so there's clearly a difference between the products, even if the formulation should be exactly the same, it will probably not be the same because different manufacturing facilities might be subjected to minor differences in raw materials, including the API (active pharmaceutical ingredient), in this case, estradiol hemihydrate, or the other non-active ingredients (alcohol, trolamine, purified water). LBI only used to manufacture testosterone gel for the US market (Androgel), according to Besins Healthcare international website, but now LBI is also manufacturing Oestrogel (the ones with the green square 🟩 apparently, the batch numbers are a 5-digit starting with 10). I still don't know if all products are going to be manufactured in France in due time (France has a government project to relocate many manufacturing facilities back to France, to avoid shortages caused by the monopoly of China and India in the pharmaceutical industry, among other factors).
I suppose it's just a matter of adjusting the doses between the 🟧 bottles and the green square 🟩 ones. It will depend on each woman to figure out which one has to be increased or decreased in dose because depending on which one you were before, you might feel better with either the green square 🟩 or the orange square 🟧."