I'm not a prophet, and we have no control over that. I can't even guarantee I'll wake up tomorrow, or that a sink hole won't open under my desk and swallow me alive. But we all do our best effort and push forward the best way we can. If 3rd party developers are making money, and the subscription model is a good one for consistent income, then I see no reason why they'd want to disappear. My recommendation is to do some due diligence, and show these companies some love.
In the end, we are all dependent on others. Modern society doesn't work for lone rangers. Of course there is risk, but there is reward!
From what i know all addons from blesta addons are open source version, they aren't encrypted and this is a value added to a unique subscription for a large number of addons, i never see other offerig the same value in whmcs or vbulletin.
Wordpress is open source and free and almost all great and professional plugin has free lite edition and paid edition .
Thanks. This is fixed in CORE-2813 for v4.4.0.
In the interim, you can patch this yourself by updating /components/reports/tax_liability/tax_liability.php
Find the following line:
'invoices.subtotal', 'invoices.currency', 'invoices.date_closed',
Replace it with:
'invoices.id', 'invoices.subtotal', 'invoices.currency', 'invoices.date_closed',
that is not true, if you buy a pro subscription you get access to all plugins available for this subscription, in your case Multi-languages and Quote are both available in the pro subscription with more than 15 others addons, from this link you can see what every subscription level offer https://blesta-addons.com/plugin/membership_club/main/
other billing software offer subscription for every addons.