this shouldnt work :) because form is different. you have copied invoice , but should copy form see in profile descr
https://memo.cash/profile/1DkKSF2yJVkVj1BhoKFnxHQcSm9t1tJQjm
this form will work TO: qrsrvtc95gg8rrag7dge3jlnfs4j9pe0ugrmeml950 AMOUNT: 100000
solved with 505 000 satoshis :) if you wan to tip this sum create new request please. Note: since it test do not participae in donation request which late than 12 hours :)
great idea! like predefined addresses like you write instead of address just electroncash.org , I will implement this, for that i need trusted foundations list :)