Import of Awaken site gives 400 Error

Hello,
I have the latest GP and Premium plugin. I have disabled other plugins and cleared the cache. When I try to import the Awaken site I get a 400 error. I use the sucuri security/firewall package. When I click "Import" my browser console shows:

VM238:1
POST https://brightinformation.com/wp-admin/admin-ajax.php 400
(anonymous) @ VM238:1
send @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=5.2.3:4
ajax @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=5.2.3:4
import_options @ admin.js?ver=1.8.3:381
(anonymous) @ admin.js?ver=1.8.3:342
dispatch @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=5.2.3:3
r.handle @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=5.2.3:3

admin.js?ver=1.8.3:409
{readyState: 4, getResponseHeader: ƒ, getAllResponseHeaders: ƒ, setRequestHeader: ƒ, overrideMimeType: ƒ, …}
abort: ƒ (a)
always: ƒ ()
complete: ƒ ()
done: ƒ ()
error: ƒ ()
fail: ƒ ()
getAllResponseHeaders: ƒ ()
getResponseHeader: ƒ (a)
overrideMimeType: ƒ (a)
pipe: ƒ ()
progress: ƒ ()
promise: ƒ (a)
readyState: 4
responseText: "0"
setRequestHeader: ƒ (a,b)
state: ƒ ()
status: 400
statusCode: ƒ (a)
arguments: null
caller: null
length: 1
name: "statusCode"
prototype: {constructor: ƒ}
__proto__: ƒ ()
[[FunctionLocation]]: load-scripts.php?c=0…e,utils&ver=5.2.3:4
[[Scopes]]: Scopes[3]
statusText: "error"
success: ƒ ()
then: ƒ ()
__proto__: Object