Basic Paye Tools (New Employer) issues sending Full Payment Submissions and Employer Paye

To cut a long story short (if possible).. 1, Due to registering as a new employer and having to wait for the Employer Paye and Accounts Office Reference to arrive in the post, I haven't been able to send any submissions for my new employee. I haven't been able to store submissions either as there doesnt seem to be an option to do this on this software. 2, Upon receiving in the post both of the above reference number last Monday (14th April 2025) I applied online for an activation code for a Government Gateway Business Account, which will hopefully arrive in the next couple of day. 3, Due to waiting for this Activation code it means I cant send Full Payment submissions and as i will be paying Employer National Insurance contributions I cant pay those either (deadline 22nd of the month. 4, As the New employee is part time and less than £1500 will be payable employers can request to pay quarterly but.....I have been unsuccessful when i have phoned both the Payments Helpline and New Employers Helpline...my call isn't even getting through to speak to an advisor (the call ends with 'Were sorry we cant deal with your call at the moment, good bye.. 5, I have been phoning since last Tuesday without success is there a fault on the phone lines, I have also tried the online chat which is always busy. Obviously Im very concerned about penalties due to having not being about to pay PAYE or send Full Payment Submissions, any help would be greatly appreciated

Hi Sparrowhawk74,
When you send your submission select the reason for it being late, if you do receive penalties and you wish to dispute these please contact us on 0300 200 3200.
Thank you. 

Hi, The only reason i could choice was 'Reasonable Excuse' but there was no text box to write any further information.. I have sent a Full Payment Submission by error instead of sending a Final Submission for the tax year...how do i rectify this.. i dont have anything to claim back.

Hi Sparrowhawk74,
Please contact the Employers Helpline as more detail is needed to help with your query.
Employers: general enquiries
Thank you.