The .exe (ActiveTcl-8.6.11.1.0000-MSWin32-x64-636b0c37) contains MSWin32 in the name, so I assume if you a have 32-Bit OS, it will work, correct?
The reason I ask is because in the FAQ section, it seems like you have to pay for the 32-bit version.
32-bit and older/legacy versions of ActiveTcl are available only with a subscription to our Team or Enterprise tiers. See our Plans & Pricing for more information.