TinSoldier
Sounds like my issue, and if that is the case the Customer Service team is little to no help, unfortunately (there's only so many times I'll try a reinstall, verify that I have enough space on my device, that my internet connection is stable, that my OS is up to date, and that other apps are closed with no success in getting past the issue)
Sadly, those reinstalls also meant that I don't have the dates on all the conversations with customer service anymore.
Given that I keep getting the same(ish) suggestions despite having spoken to various GMs suggests to me that the issue is rare and/or caused by very specific hard/software combinations and/or specific timing and any attempts to reproduce the issue haven't met with success.
StR for me:
Start game.
Navigate to Museum - a Tutorial prompt {for Jewelry/Pottery exhibits} is active. (I upgraded* the museum to level 2 around the arrival of war exhibits, honestly don't recall the *exact* timing; I've tried contacting CS after 2(?) major patches (plus however many minors))
Museum opens to 1st Legendary/2nd weapon page, with the tutorial explaining that Jewelry and Pottery exhibits have been unlocked (in line with reaching level 2) it tells me to add a jewelry artifact.
I click continue, animated arrow points left, disappears off screen.
This being the tutorial, all buttons that are *not* the button I'm supposed to click are inactive.
And since the button I'm supposed to click is off-screen, I'm *effectively* locked out.
If there's any other information you need/might have use of, I'm happy to provide it if I am able.
*I'm guessing the "since it improves"/"desde que lo mejore" indicates the same.