I’ve been trying to register on their website with my non-mainstream email address ending with a geographical TLD and I got this error:<p>The email can't be a foreign email address ending with <TLD in my domain name><p>Out of curiosity I tried with some other domain I have around ending with different geographical TLDs and the error is always the same.<p>Support mentioned that it’s due to “regulations” but I find this very hard to believe.
Given that they will likely not quote/point to a specific 'regulation' that says they must do this, you won't know if it is actually 'regulations' or just them.<p>In the meantime, you might take a look at Open Tax Solver:<p><a href="https://opentaxsolver.sourceforge.net/" rel="nofollow">https://opentaxsolver.sourceforge.net/</a><p>It is a local program, so it won't care where in the world you are when you are using it.