@Korina @erpreciso
First of all I'm sorry if I hijacked a thread but the header covered partialy my problem and so, instead of opening another thread containing also "wrong location", perhaps due to other reasons, I used this one ;-) Perhaps it was the "wrong location" :-)))
Yes I'm using the latest Firefox 93.0.
I do now understand that the layers preferences, despite what is written completely at the bottom of the folded-open layers-menu, are not saved in the Cloud but in the browsers cache.

I think that's were the problem lays as my Firefox settings are such that Firefox deletes cookies, site-data and caches upon Firefox closure.
Whether this also influences the location-settings, I don't know. Even with the latest Firefox the location setting goes back to the IP location instead of the selected preferred town.
It has to be noted however that this problem of not saving the location exist (only?) on my Macbook (Sierra 10.12.6, Firefox 93.0) but not on my iPhone App. I guess closing the App on an iPhone does not wipe out caches.

If deemed required we can continue this discussion in another thread; please advice ......

@korina Thank you for your reply.
When in logged in, in "settings", regardless which location I select (in my case a nearby town), after having officially logged out, closing Firefox 92.0.1 (Mac OS 10.12.6) after logging back into Windy the location is back to: "determined by IP address".
The same happens when I blank-out, on the right-hand side of the screen in "layers", a whole bunch of layers which I don't require like swell, NO2, waves, water-temperature, snow etc etc, they only stay as long as I'm logged in. As soon as I log-out and log back in, my selection is gone and everything is back to the "standard" lay-out (including back to the IP location)
The only layers which seems to be saved and do stay after having logged out and back in again are the few selected layers in the bottom right-hand side of the screen (for example selected wind-speed in m/s instead of knots)
So only a very few personalized options do get saved, however the bulk of my selections just disappear after having logged out.
Unless that I make a mistake, that there is a "save" button to save my selected location and preferred layers, but if the program is mend to save these things automatically; apart from a few exceptions, it doesn't work on my computer.
Please let me know if I've to clarify more or if I'm making a mistake?
With kind regards: sjælland.

@sjælland

Update to my comment above: browsing through the forum I've seen this "not-storing-in-the-cloud" problem already reported back in 2019 !
It's either not solvable or nothing gets done about it ??
Please Windy report the latest status ......

Same here, being logged in as a "premium member" the page doesn't store my favored location and jumps back to the default IP address setting.
Not only that, but also in "Layers" if I blank out waves / air quality and a whole bunch of others they are just back when I revisit the page.
It seems that only a few things are stored in the cloud, but the bulk of my preferences are not :-(
A bit of a pain in the butt of the else excellent webpage ...
Hope that it can be resolved soon .....