I don't know of any problems with the system. Your may want to check your sign in and password for accuracy. Plese let me know if I can be of more help.
also try using a different browser and see if that works.
and try clearing your browser cache.
As as aside ...
Have you tried "Clearing" the "Cookies" and "Cache" (and, possibly, even the "Browsing History") on your Computer lately?
Sometimes the above gets 'clogged', with 'Old' stuff the one's Computer keeps using.
If you are experiencing problems/issue with "Logging Into" the "Family Tree" of 'FamilySearch' (or, just 'FamilySearch' in general), I suggest you try "Clearing" the "Cookies" and "Cache" (and, possibly, even the "Browsing History") on your Computer - see if that makes this better.
Juts a suggestion.
Plus, what "Browser" and "Operating System" are you using?
Are the "Browser" and "Operating System" up-to-date, with the latest versions?
Some "Browsers" and "Operating Systems" just do not, work with; and/or, well with, 'FamilySearch'.
There are recommended "Browsers" for 'FamilySearch'.
And, many of the much OLDER "Operating Systems" (on old Computers) NO LONGER work with 'FamilySearch'.
Just some thoughts.