Hi Shira,
In general, you can't modify the appearance of the geopoint questions in the Web App - apart from two exceptions:
1) Publishing a survey from Connect will add an altitude field to the question. This is because the created service supports altitude. Surveys created on the web do not support altitude, so the field is missing.
2) You can set the appearance value of a geopoint question to hide-input in connect and republish. When viewed in the Survey123 web app the question will appear with read-only coordinates, as opposed to the default coordinate input box. Note that this appearance value does not apply to the Survey123 field app.
Could you share the specific things you would like to update?
Thanks
John