Do you find that weird words appears in your account?
For exemple some name you gave to your trips or your stages display differently in different places in the app. Or you notice that calendar displays strange date.
The problem is most probably caused by the «automatic translation» coming from your web browser.
You just need to deactivate automatic translation from your browser settings and everything should get back to normal.
Here are some links to articles that explain how to deactivate translation:
Chrome: go to article.
Safari: go to article.