I would suggest you create a new version designed for 'Property Developers'
This would have specific options and limitations. ( to be more useful for them. )
I would suggest for 'a fee' - they will get a country wide exclusive, of your technology - for 1, 2 or 3 years.
This simply means you won't sell it to their competition. No other Property Agent in the same Country.
If they are a large property developer - and they want a Multi-Country License, they pay per country and you agree not to sell your services in any country in the contract, for the specified time period. ( The money you make from the first big contract - I suggest you spend some on a lawyer to help you make better ongoing contracts. ) - and please don't forget to write me a 'small check' to say thanks !!
<My user Name> @gmail.com - Send me an email, i will send you even more ideas.
( I hope I don't get a ton of spam for this !! )
Why can't you private message - on itch ??