Hi All

I have set up my force.com custom domain (http://memobottle.force.com/tradegecko) for the tradegecko integration. However when I try to save it I am presented with the below error message. Has anyone else experienced this issue and if so what was the solution? Any help would be appreciated.

"Upsert failed. First exception on row 0; first error: STRING_TOO_LONG, Redirect URI: data value too large: https://tradegecko.ap5.visual.force.com/apex/tradegecko__tradegeckoconfig?sfdc.tabname=01r7f0000009zqn&vfreturlinsfx=%2fhome%2fhome.jsp&nonce=a17df2fb5c8d25cad3f41a923dd26b0be63b23e06b80c619d2b8d6c31fa2e241&sfdciframeorigin=https%3a%2f%2fap5.lightning.force.com&tour=&isdtp=p1 (max length=255): [tradegecko__Redirect_URI__c]
Error is in expression '{!saveWebhookURL}' in component <apex:commandButton> in page tradegecko:tradegeckoconfig: (tradegecko)
An unexpected error has occurred. Your solution provider has been notified. (tradegecko)"