Please Help

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Hello all, i have an openvpn connection to my office which works perfectly on my windows xp laptop, however, when i tried to get it to work on my ipad, i get the following error code "digest_not_found: RSA-MD5", i installed the certificate and the .p12 file on my ipad and moved all the needed files to the openvpn app. and when i try to remove the auth RSA-MD5 from the configuration file the error disappears but i can't connect to the server, it times out.
my configuration file is shown below; oh and never mind the windows configuration i think the app already discards them automatically. does anyone have a solution for this frustrating problem?

verb 3
client
resolv-retry infinite
remote vpn.tedata.net
port 1194
proto udp
dev tun
dev-node TEDATA-VPN
key-method 2
auth RSA-MD5
tls-cipher DHE-RSA-AES256-SHA
cipher BF-CBC

cd "C:/Program Files/OpenVPN"
;cd /etc/openvpn/easy-rsa/keys

tls-auth cert/tls-auth.key 1

;pkcs12 cert/<username>.p12
win32-gui
ca cert/ca.crt
cryptoapicert "THUMB:9c e7 29 c3 d7 91 57 2e b3 60 d2 df b2 c7 8e c3 ab 64 83 75"

ns-cert-type server
nobind
persist-key
persist-tun
mlock
comp-lzo
auth-user-pass
ping-timer-rem

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the IT department, i cant modify anything on the server