Contact
One person reads this, and it is the person who wrote the solver.
Purchase orders and invoices
You do not need to email us for this. Any tier can be bought on a purchase order: chooseinvoice at checkout, enter your PO number, and you will get a proper invoice with net terms — no credit card. EU and UK businesses can enter a VAT number and it is zero-rated under the reverse-charge rules.
If your purchasing department needs something we have not thought of, email us and we will sort it.
Support
Bugs, licence trouble, or a shot that will not behave — email us. If the plugin is misbehaving, include your host and version, your GPU and driver, and the Build string from the top of the node.