Experimental API Sandbox keeps resetting back to Default API Sandbox

As per title, my API sandbox keeps resetting back to the default version from the experimental version. How do I prevent this? (I need experimental version for GroupInitiative).

Unfortunately, at this point there is no preventing this. Here's a script you can load in your game that should alert you if the sandbox ever reverts to "default" mode: /* */ var API_Meta = API_Meta || {}; API_Meta.SandboxWatchdog = { offset: Number.MAX_SAFE_INTEGER, lineCount: -1 }; { try { throw new Error(''); } catch (e) { API_Meta.SandboxWatchdog.offset = (parseInt(e.stack.split(/\n/)[1].replace(/^.*:(\d+):.*$/, '$1'), 10) - (4)); } } const TestScript4 = (() =&gt; { &nbsp; &nbsp; &nbsp; &nbsp; let camp; &nbsp; &nbsp; &nbsp; &nbsp; const alertDefault = () =&gt; { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; let contents = `The sandbox has reverted to default mode.`; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; let msg = `&lt;div style="width: 100%;border: none;border-radius: 0px;min-height: 60px;display: block;text-align: left;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `white-space: pre-wrap;overflow: hidden"&gt;&lt;div style="font-size: 14px;font-family: &amp;quot;Segoe UI&amp;quot;, Roboto, Ubuntu, sans-serif"&gt;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `&lt;div style="background-color: #000000;border-radius: 6px 6px 0px 0px;position: relative;border-width: 2px 2px 0px 2px;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `border-style: solid;border-color: black;"&gt;&lt;div style="border-radius: 18px;width: 35px;height: 35px;position: absolute;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `left: 3px;top: 2px;"&gt;&lt;img style="background-color: transparent ; float: left ; border: none ; max-height: 40px;"` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `src=" <a href="https://i.imgur.com/kiUf3UC.png&quot;&gt;&lt;/div&gt;&lt;div" rel="nofollow">https://i.imgur.com/kiUf3UC.png"&gt;&lt;/div&gt;&lt;div</a> style="background-color: #c94d4d;font-weight: bold;font-size: 18px;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `line-height: 36px;border-radius: 6px 6px 0px 0px;padding: 4px 4px 0px 43px;color: #ffffff;min-height: 38px;"&gt;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `ALERT: Default Sandbox&lt;/div&gt;&lt;/div&gt;&lt;div style="background-color: white;padding: 4px 8px;border: 2px solid #000000;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `border-bottom-style: none;color: #404040;"&gt;${contents}&lt;/div&gt;&lt;div style="background-color: white;text-align: right;` + &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; `padding: 4px 8px;border: 2px solid #000000;border-top-style: none;border-radius: 0px 0px 6px 6px"&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;`; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; sendChat('SandboxWatchdog', `/w gm ${msg}`); &nbsp; &nbsp; &nbsp; &nbsp; } &nbsp; &nbsp; &nbsp; &nbsp; const check = () =&gt; { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (camp.sandboxVersion.toLowerCase() === 'default') { alertDefault(); } &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else { setTimeout(check,1500);} &nbsp; &nbsp; &nbsp; &nbsp; } &nbsp; &nbsp; on('ready', function() { &nbsp; &nbsp; &nbsp; &nbsp; camp = Campaign(); &nbsp; &nbsp; &nbsp; &nbsp; setTimeout(check,0); &nbsp; &nbsp; }); })(); { try { throw new Error(''); } catch (e) { API_Meta.SandboxWatchdog.lineCount = (parseInt(e.stack.split(/\n/)[1].replace(/^.*:(\d+):.*$/, '$1'), 10) - API_Meta.SandboxWatchdog.offset); } } /* */ I can't *fully* test this at the moment because I can't get my sandbox to boot into Experimental mode... but this should work. EDIT: found one small bug; corrected in the code, above.