Receiving paypal reg key but account setup incomplete. Time?

Item 2 below is a user I am setting up in testing the paypal payment setup with UM 4.11
Payment processes. Its receiving a registration key as seen below but remains incomplete. One issue I notice the the registration date. It is 5 hours AHEAD of actual time. I believe this is related to a GMT offset setting that I cannot modify. I have set Customer time zone to +00:00 and have working NTP server settings on my RB450G. Time zone is CST6CDT. Its all sync’d up. Its just jacked up when I test the paypal payment process and I know the time is critical for completion.

I would appreciate some help with nailing down the time discrepancy. I am going to try fooling it by making the customer time zone +05:00

Flags: X - disabled, A - active, I - incomplete
0 customer=admin name=“test” password=“test” shared-users=2
uptime-used=2d2h15m46s download-used=227196256 upload-used=53064560
last-seen=sep/28/2010 02:35:23

1 customer=admin name=“test2” password=“test2” shared-users=1
uptime-used=21m33s download-used=480643 upload-used=296644
last-seen=sep/26/2010 13:46:44

2 I customer=admin name=“ulink” password=“ulink”
registration-date=sep/28/2010 02:35:49
email=“xxx@ulinksystems.com” shared-users=1 last-seen=never
reg-key=“7bd48uizids28i9ujyf5wcnkjv5kd4fd”

Received email from paypal recognizing that payment notifications are failing:

Please check your server that handles PayPal Instant Payment Notifications (IPN). IPNs sent to the following URL(s) are failing:

https://mypublicip/user?serviceId=MWT.Payment&method=2
https://mypublicip/user?serviceId=MWT.Payment&method=2

If you do not recognize this URL, you may be using a service provider that is using IPN on your behalf. Please contact your service provider with the above information. If this problem continues, IPNs may be disabled for your account.

Thank you for your prompt attention to this issue.


Thanks,

PayPal

Throwing some different ideas to this. Processing another payment to myself, I get the following for tools-user manager-users:
2 I customer=admin name="ulink" password="ulink"
registration-date=oct/12/2010 02:09:39
email="service@ulinksystems.com" shared-users=1 last-seen=never
reg-key="wt9qwv4b4fdgez5ukd3yk6yiyd73y5y6"

and tools-user manager-payments:
user=ulink customer=admin price=500 currency="USD"
trans-start=oct/12/2010 02:09:39 trans-end=waiting trans-status=started
result-code=0 result-msg="" method=paypal
Paypal is taking the cash and delivering it to my account but not getting the okay back to the RB450g.
I am using a static address on UM public host with a self signed cert achieving all transactions in an encrypted state.
Hotspot walled garden is setup according to the wiki with the addition of my own host IP:
Flags: X - disabled, D - dynamic

SERVER METHOD DST-HOST DST-PORT PATH ACTION HITS

0 D 443 allow 13
1 X ;;; place hotspot rules here
allow 0
2 X /192.16... allow 0
3 ^content\.p... 443 allow 0
4 ^www\.paypa... 443 allow 1
5 *.paypal.com allow 6
6 *.paypal.com.au allow 0
7 *.paypalobje... allow 0
8 *.akamaiedge... allow 7
9 66.xxx.xxx.xxx allow 0

For those that have UM 4.11 and successfully running paypal payments, is it possible to compare settings with you? I have been working on this single issue for 5 weeks. Looking forward to moving ahead.