In case you are trying to edit an existing Consent field and the changes you're making are not being saved, please check if you're using any ampersand characters in the text of your consent.
The ampersand, "&" is an HTML sensitive sign and needs to be properly encoded as the input filed where you paste the consent's text accepts HTML rather than plain text.
Therefore, you will need to replace the ampersand character with its URL encoded version "&" instead. More information about different HTML characters is available here.
Please note, that consent forms only support <a> tags (links), and no other tags like <p> . Adding these tags will prevent the form from being saved.